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  <rr:RiskReturnHeading contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="6"&gt;&lt;b&gt;Fund Overview&lt;/b&gt;&lt;/font&gt;&lt;br/&gt;&lt;br/&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;Key Facts about BlackRock Long-Horizon Equity Fund&lt;/b&gt;&lt;/font&gt;&lt;/b&gt;&lt;/font&gt;</rr:RiskReturnHeading>
  <rr:ObjectiveHeading contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;i&gt;&lt;b&gt;Investment Objective&lt;/i&gt;&lt;/b&gt;&lt;/font&gt;</rr:ObjectiveHeading>
  <rr:ObjectivePrimaryTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;The investment objective of BlackRock Long-Horizon Equity Fund (the &amp;#8220;Fund&amp;#8221;) is to provide high total investment return. &lt;/font&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseHeading contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;i&gt;&lt;b&gt;Fees and Expenses of the Fund &lt;/i&gt;&lt;/b&gt;&lt;/font&gt;</rr:ExpenseHeading>
  <rr:ExpenseNarrativeTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the BlackRock-advised fund complex. More information about these and other discounts is available from your financial professional and in the &amp;#8220;Details about the Share Classes&amp;#8221; section on page 21 of the Fund&amp;#8217;s prospectus and in the &amp;#8220;Purchase of Shares&amp;#8221; section on page II-58 of the Fund&amp;#8217;s statement of additional information. &lt;/font&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:ExpenseBreakpointDiscounts contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the BlackRock-advised fund complex.&lt;/font&gt;</rr:ExpenseBreakpointDiscounts>
  <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_Member" unitRef="USD">25000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
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  <rr:OperatingExpensesCaption contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;Annual Fund Operating Expenses&lt;/b&gt;&lt;/font&gt;&lt;br/&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;(expenses that you pay each year as a percentage of the&lt;/b&gt;&lt;/font&gt;&lt;br/&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt; value of your investment)&lt;/b&gt;&lt;/font&gt;</rr:OperatingExpensesCaption>
  <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;The Total Annual Fund&amp;nbsp;Operating Expenses do not correlate to the ratio of expenses to average net assets given in the Fund&amp;#8217;s most recent annual report, which does not include Acquired Fund&amp;nbsp;Fees and Expenses. &lt;/font&gt;</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;March 1, 2013&lt;/font&gt;</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleHeading contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;Example:&lt;/b&gt;&lt;/font&gt;</rr:ExpenseExampleHeading>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&amp;#8217;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be: &lt;/font&gt;</rr:ExpenseExampleNarrativeTextBlock>
  <rr:ExpenseExampleNoRedemptionByYearCaption contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;You would pay the following expenses if you did not redeem your expenses: &lt;/font&gt;</rr:ExpenseExampleNoRedemptionByYearCaption>
  <rr:PortfolioTurnoverHeading contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;Portfolio Turnover &lt;/b&gt;&lt;/font&gt;</rr:PortfolioTurnoverHeading>
  <rr:StrategyHeading contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt;Principal Investment Strategies of the Fund&lt;/i&gt;&lt;/b&gt;&lt;/font&gt;</rr:StrategyHeading>
  <rr:PortfolioTurnoverTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &amp;#8220;turns over&amp;#8221; its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&amp;#8217;s performance. During the most recent fiscal year, the Fund&amp;#8217;s portfolio turnover rate was 37% of the average value of its portfolio. &lt;/font&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:StrategyNarrativeTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;The Fund seeks to achieve its investment objective through a fully managed investment policy utilizing global equity securities. The Fund will, under normal circumstances, invest at least 80% of its net assets (plus any borrowings for investment purposes) in equity securities. Equity securities include common stock, preferred stock, convertible securities, warrants, and securities or other instruments whose price is linked to the value of common stock. The combination of equity securities will be varied from time to time both with respect to types of securities and markets and in response to changing market and economic trends. In selecting equity investments, the Fund mainly seeks securities that Fund management believes are undervalued. When choosing investments, Fund management considers various factors, including opportunities for equity investments to increase in value, expected dividends, and interest rates. The Fund may invest in the securities of companies of any market capitalization. The Fund may invest a portion of its assets in securities directly or indirectly secured by real estate or interests therein or issued by companies that invest in real estate or interests therein such as stock, bonds or convertible bonds issued by Real Estate Investment Trusts (&amp;#8220;REITs&amp;#8221;). &lt;/font&gt;&lt;br/&gt;&lt;br/&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;The Fund has no geographic limits in where it may invest. The Fund may invest in both developed and emerging markets. When choosing investment markets, Fund management considers various factors, including economic and political conditions, potential for economic growth and possible changes in currency exchange rates. In addition to investing in foreign securities, the Fund actively manages its exposure to foreign currencies through the use of forward currency contracts and other currency derivatives. The Fund may own foreign cash equivalents or foreign bank deposits as part of the Fund&amp;#8217;s investment strategy. The Fund will also invest in non-U.S. currencies. The Fund may underweight or overweight a currency based on the Fund management team&amp;#8217;s outlook. As part of its principal investment strategies, the Fund may invest without limitation in cash, cash equivalents, money market securities, such as U.S. Treasury and agency obligations, other U.S. Government securities, short term debt obligations of corporate issuers, certificates of deposit, bankers&amp;#8217; acceptances, commercial paper (short term, unsecured, negotiable promissory notes of a domestic or foreign issuer) or other high quality fixed-income securities. &lt;/font&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskHeading contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt;Principal Risks of Investing in the Fund&lt;/i&gt;&lt;/b&gt;&lt;/font&gt;</rr:RiskHeading>
  <rr:RiskNarrativeTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt; Risk is inherent in all investing. The value of your investment in the Fund, as well as the amount of return you receive on your investment, may fluctuate significantly from day to day and over time. You may lose part or all of your investment in the Fund or your investment may not perform as well as other similar investments. The following is a summary description of principal risks of investing in the Fund. &lt;/font&gt;  &lt;ul type="square"&gt;&lt;li&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt; Convertible Securities Risk &lt;/i&gt;&lt;/b&gt; &amp;#8212; The market value of a convertible security performs like that of a regular debt security; that is, if market interest rates rise, the value of a convertible security usually falls. In addition, convertible securities are subject to the risk that the issuer will not be able to pay interest or dividends when due, and their market value may change based on changes in the issuer&amp;#8217;s credit rating or the market&amp;#8217;s perception of the issuer&amp;#8217;s creditworthiness. Since it derives a portion of its value from the common stock into which it may be converted, a convertible security is also subject to the same types of market and issuer risks that apply to the underlying common stock. &lt;/font&gt;&lt;/li&gt;&lt;/ul&gt;  &lt;ul type="square"&gt;&lt;li&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt; Derivatives Risk &lt;/i&gt;&lt;/b&gt; &amp;#8212; The Fund&amp;#8217;s use of derivatives may reduce the Fund&amp;#8217;s returns and/or increase volatility. Volatility is defined as the characteristic of a security, an index or a market to fluctuate significantly in price within a short time period. Derivatives are also subject to counterparty risk, which is the risk that the other party in the transaction will not fulfill its contractual obligation. A risk of the Fund&amp;#8217;s use of derivatives is that the fluctuations in their values may not correlate perfectly with the overall securities markets. The possible lack of a liquid secondary market for derivatives and the resulting inability of the Fund to sell or otherwise close a derivatives position could expose the Fund to losses and could make derivatives more difficult for the Fund to value accurately. Derivatives may give rise to a form of leverage and may expose the Fund to greater risk and increase its costs. Recent legislation calls for new regulation of the derivatives markets. The extent and impact of the regulation is not yet known and may not be known for some time. New regulation may make derivatives more costly, may limit the availability of derivatives, or may otherwise adversely affect the value or performance of derivatives. &lt;/font&gt;&lt;/li&gt;&lt;/ul&gt; &lt;ul type="square"&gt;&lt;li&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt; Emerging Markets Risk &lt;/i&gt;&lt;/b&gt; &amp;#8212; Emerging markets are riskier than more developed markets because they tend to develop unevenly and may never fully develop. Investments in emerging markets may be considered speculative. Emerging markets are more likely to experience hyperinflation and currency devaluations, which adversely affect returns to U.S. investors. In addition, many emerging securities markets have far lower trading volumes and less liquidity than developed markets.&lt;/font&gt;&lt;/li&gt;&lt;/ul&gt; &lt;ul type="square"&gt;&lt;li&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt; Equity Securities Risk &lt;/i&gt;&lt;/b&gt; &amp;#8212; Stock markets are volatile. The price of equity securities fluctuates based on changes in a company&amp;#8217;s financial condition and overall market and economic conditions. &lt;/font&gt;&lt;/li&gt;&lt;/ul&gt; &lt;ul type="square"&gt;&lt;li&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt; Foreign Securities Risk &lt;/i&gt;&lt;/b&gt; &amp;#8212; Foreign investments often involve special risks not present in U.S. investments that can increase the chances that the Fund will lose money. These risks include: &lt;/font&gt;&lt;/li&gt;&lt;/ul&gt; &lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt; &lt;tr&gt; &lt;td width="4%"&gt;&lt;font size="1"&gt;&lt;/font&gt;&lt;/td&gt; &lt;td valign="top" width="3%" align="left"&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt; &lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt; The Fund generally holds its foreign securities and cash in foreign banks and securities depositories, which may be recently organized or new to the foreign custody business and may be subject to only limited or no regulatory oversight.&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt; &lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 6px"&gt;&lt;font size="1"&gt;&lt;/font&gt;&lt;/p&gt; &lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt; &lt;tr&gt; &lt;td width="4%"&gt;&lt;font size="1"&gt;&lt;/font&gt;&lt;/td&gt; &lt;td valign="top" width="3%" align="left"&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt; &lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt; Changes in foreign currency exchange rates can affect the value of the Fund&amp;#8217;s portfolio. &lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt; &lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 6px"&gt;&lt;font size="1"&gt;&lt;/font&gt;&lt;/p&gt; &lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt; &lt;tr&gt; &lt;td width="4%"&gt;&lt;font size="1"&gt;&lt;/font&gt;&lt;/td&gt; &lt;td valign="top" width="3%" align="left"&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt; &lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt; The economies of certain foreign markets may not compare favorably with the economy of the United States with respect to such issues as growth of gross national product, reinvestment of capital, resources and balance of payments position. &lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt; &lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 6px"&gt;&lt;font size="1"&gt;&lt;/font&gt;&lt;/p&gt; &lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt; &lt;tr&gt; &lt;td width="4%"&gt;&lt;font size="1"&gt;&lt;/font&gt;&lt;/td&gt; &lt;td valign="top" width="3%" align="left"&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt; &lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt; The governments of certain countries may prohibit or impose substantial restrictions on foreign investments in their capital markets or in certain industries. &lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt; &lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 6px"&gt;&lt;font size="1"&gt;&lt;/font&gt;&lt;/p&gt; &lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt; &lt;tr&gt; &lt;td width="4%"&gt;&lt;font size="1"&gt;&lt;/font&gt;&lt;/td&gt; &lt;td valign="top" width="3%" align="left"&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt; &lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt; Many foreign governments do not supervise and regulate stock exchanges, brokers and the sale of securities to the same extent as does the United States and may not have laws to protect investors that are comparable to U.S. securities laws. &lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt; &lt;p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 6px"&gt;&lt;font size="1"&gt;&lt;/font&gt;&lt;/p&gt; &lt;table style="BORDER-COLLAPSE: collapse" border="0" cellspacing="0" cellpadding="0" width="100%"&gt; &lt;tr&gt; &lt;td width="4%"&gt;&lt;font size="1"&gt;&lt;/font&gt;&lt;/td&gt; &lt;td valign="top" width="3%" align="left"&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt; &lt;td valign="top" align="left"&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt; Settlement and clearance procedures in certain foreign markets may result in delays in payment for or delivery of securities not typically associated with settlement and clearance of U.S. investments.&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;ul type="square"&gt;&lt;li&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt; Geographic Concentration Risk &lt;/i&gt;&lt;/b&gt; &amp;#8212; From time to time, the Fund may invest a substantial amount of its assets in issuers located in a single country or a limited number of countries. If the Fund concentrates its investments in this manner, it assumes the risk that economic, political and social conditions in those countries will have a significant impact on its investment performance. The Fund&amp;#8217;s investment performance may also be more volatile if it concentrates its investments in certain countries, especially emerging market countries. &lt;/font&gt;&lt;/li&gt;&lt;/ul&gt; &lt;ul type="square"&gt;&lt;li&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt; Market Risk and Selection Risk &lt;/i&gt;&lt;/b&gt; &amp;#8212; Market risk is the risk that one or more markets in which the Fund invests will go down in value, including the possibility that the markets will go down sharply and unpredictably. Selection risk is the risk that the securities selected by Fund management will underperform the markets, the relevant indices or the securities selected by other funds with similar investment objectives and investment strategies. This means you may lose money.  &lt;/font&gt;&lt;/li&gt;&lt;/ul&gt; &lt;ul type="square"&gt;&lt;li&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt; Mid Cap Securities Risk &lt;/i&gt;&lt;/b&gt; &amp;#8212; The securities of mid cap companies generally trade in lower volumes and are generally subject to greater and less predictable price changes than the securities of larger capitalization companies. &lt;/font&gt;&lt;/li&gt;&lt;/ul&gt; &lt;ul type="square"&gt;&lt;li&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt; Real Estate Related Securities Risk &lt;/i&gt;&lt;/b&gt; &amp;#8212; The main risk of real estate related securities is that the value of the underlying real estate may go down. Many factors may affect real estate values. These factors include both the general and local economies, the amount of new construction in a particular area, the laws and regulations (including zoning and tax laws) affecting real estate and the costs of owning, maintaining and improving real estate. The availability of mortgages and changes in interest rates may also affect real estate values. If the Fund&amp;#8217;s real estate related investments are concentrated in one geographic area or in one property type, the Fund will be particularly subject to the risks associated with that area or property type. &lt;/font&gt;&lt;/li&gt;&lt;/ul&gt; &lt;ul type="square"&gt;&lt;li&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt; REIT Investment Risk &lt;/i&gt;&lt;/b&gt; &amp;#8212; Investments in REITs involve unique risks. REITs may have limited financial resources, may trade less frequently and in limited volume and may be more volatile than other securities. &lt;/font&gt;&lt;/li&gt;&lt;/ul&gt; &lt;ul type="square"&gt;&lt;li&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt; Small Cap and Emerging Growth Securities Risk &lt;/i&gt;&lt;/b&gt; &amp;#8212; Small cap or emerging growth companies may have limited product lines or markets. They may be less financially secure than larger, more established companies. They may depend on a more limited management group than larger capitalized companies.&lt;/font&gt;&lt;/li&gt;&lt;/ul&gt; &lt;ul type="square"&gt;&lt;li&gt;&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt; Warrants Risk &lt;/i&gt;&lt;/b&gt; &amp;#8212; If the price of the underlying stock does not rise above the exercise price before the warrant expires, the warrant generally expires without any value and the Fund loses any amount it paid for the warrant. Thus, investments in warrants may involve substantially more risk than investments in common stock. Warrants may trade in the same markets as their underlying stock; however, the price of the warrant does not necessarily move with the price of the underlying stock. &lt;/font&gt;&lt;/li&gt;&lt;/ul&gt;</rr:RiskNarrativeTextBlock>
  <rr:RiskLoseMoney contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;You may lose part or all of your investment in the Fund or your investment may not perform as well as other similar investments.&lt;/font&gt;</rr:RiskLoseMoney>
  <rr:BarChartAndPerformanceTableHeading contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;i&gt;Performance Information&lt;/i&gt;&lt;/b&gt;&lt;/font&gt;</rr:BarChartAndPerformanceTableHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;The information shows you how the Fund&amp;#8217;s performance has varied year by year and provides some indication of the risks of investing in the Fund. The Fund&amp;#8217;s Annual Total Returns prior to October 15, 2012 as reflected in the bar chart and the table are the returns of the Fund that followed different investment objectives and investment strategies under the name &amp;#8220;BlackRock Global Dynamic Equity Fund.&amp;#8221; The returns for Class R Shares prior to March 1, 2007, the commencement of operations of Class R Shares, are based upon performance of the Fund&amp;#8217;s Institutional Shares. The returns for Class R Shares, however, are adjusted to reflect the distribution and service (12b-1) fees applicable to Class R Shares. The benchmarks against which the Fund measured its performance prior to October 15, 2012, the S&amp;amp;P 500 Index, the FTSE World Index, the FTSE World (ex US) Index and the Reference Benchmark, were replaced with the Morgan Stanley Capital International (&amp;#8220;MSCI&amp;#8221;) All Country World Index (&amp;#8220;ACWI&amp;#8221;), a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed and emerging markets. Fund management believes the MSCI ACWI is more relevant to the Fund&amp;#8217;s new investment strategies. As with all such investments, past performance (before and after taxes) is not an indication of future results. Sales charges are not reflected in the bar chart. If they were, returns would be less than those shown. However, the table includes all applicable fees and sales charges. If the Fund&amp;#8217;s investment manager and its affiliates had not waived or reimbursed certain Fund expenses during these periods, the Fund&amp;#8217;s returns would have been lower. Updated information on the Fund&amp;#8217;s performance can be obtained by visiting http://www.blackrock.com/funds or can be obtained by phone at 800-882-0052. &lt;/font&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;The information shows you how the Fund&amp;#8217;s performance has varied year by year and provides some indication of the risks of investing in the Fund.&lt;/font&gt;</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:PerformanceAvailabilityPhone contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;800-882-0052&lt;/font&gt;</rr:PerformanceAvailabilityPhone>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;http://www.blackrock.com/funds&lt;/font&gt;</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;As with all such investments, past performance (before and after taxes) is not an indication of future results.&lt;/font&gt;</rr:PerformancePastDoesNotIndicateFuture>
  <rr:BarChartHeading contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;&lt;center&gt;Investor A Shares &lt;br/&gt;ANNUAL TOTAL RETURNS&lt;br /&gt;BlackRock Long-Horizon Equity Fund &lt;br/&gt;As of 12/31&lt;/font&gt;</rr:BarChartHeading>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;Sales charges are not reflected in the bar chart. If they were, returns would be less than those shown.&lt;/font&gt;</rr:BarChartDoesNotReflectSalesLoads>
  <rr:BarChartClosingTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;During the period shown in the bar chart, the highest return for a quarter was 16.77% (quarter ended June 30, 2009) and the lowest return for a quarter was &amp;#8211;18.40% (quarter ended September 30, 2008). &lt;/font&gt;</rr:BarChartClosingTextBlock>
  <rr:PerformanceTableHeading contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;&lt;b&gt;As of 12/31/11&lt;br /&gt;Average Annual Total Returns&lt;/b&gt;&lt;/font&gt;</rr:PerformanceTableHeading>
  <rr:PerformanceTableNarrativeTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;After-tax returns are calculated using the historical highest individual Federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor&amp;#8217;s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Investor A Shares only, and the after-tax returns for Investor B, Investor C, Institutional and Class R Shares will vary.&lt;/font&gt;</rr:PerformanceTableNarrativeTextBlock>
  <rr:PerformanceTableUsesHighestFederalRate contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;After-tax returns are calculated using the historical highest individual Federal marginal income tax rates and do not reflect the impact of state and local taxes.&lt;/font&gt;</rr:PerformanceTableUsesHighestFederalRate>
  <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;Actual after-tax returns depend on the investor&amp;#8217;s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.&lt;/font&gt;</rr:PerformanceTableNotRelevantToTaxDeferred>
  <rr:PerformanceTableOneClassOfAfterTaxShown contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;After-tax returns are shown for Investor A Shares only, and the after-tax returns for Investor B, Investor C, Institutional and Class R Shares will vary. &lt;/font&gt;</rr:PerformanceTableOneClassOfAfterTaxShown>
  <rr:PerformanceTableDoesReflectSalesLoads contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;However, the table includes all applicable fees and sales charges.&lt;/font&gt;</rr:PerformanceTableDoesReflectSalesLoads>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="USD">649</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="USD">664</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="USD">308</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="USD">105</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear01 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="USD">176</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="USD">913</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="USD">1011</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="USD">643</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="USD">328</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear03 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="USD">560</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="USD">1195</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="USD">1334</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="USD">1103</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="USD">569</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear05 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="USD">968</rr:ExpenseExampleYear05>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="USD">2000</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="USD">2232</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="USD">1259</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="USD">2379</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear10 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="USD">2110</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="USD">214</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear01 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="USD">208</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="USD">661</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear03 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="USD">643</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="USD">1134</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear05 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="USD">1103</rr:ExpenseExampleNoRedemptionYear05>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="USD">2379</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear10 decimals="INF" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="USD">2232</rr:ExpenseExampleNoRedemptionYear10>
  <rr:HighestQuarterlyReturnLabel contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;highest return&lt;/font&gt;</rr:HighestQuarterlyReturnLabel>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member">2009-06-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:LowestQuarterlyReturnLabel contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;lowest return&lt;/font&gt;</rr:LowestQuarterlyReturnLabel>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member">2008-09-30</rr:BarChartLowestQuarterlyReturnDate>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member">2005-11-04</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member">2005-11-04</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member">2005-11-04</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member">2005-11-04</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnInceptionDate contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member">2005-11-04</rr:AverageAnnualReturnInceptionDate>
  <rr:ShareholderFeesTableTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;div style="display:none"&gt;~ http://www.blackrock.com/role/ScheduleShareholderFeesBlackRockLong-HorizonEquityFund column period compact * ~&lt;/div&gt;

</rr:ShareholderFeesTableTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;div style="display:none"&gt;~ http://www.blackrock.com/role/ScheduleAnnualFundOperatingExpensesBlackRockLong-HorizonEquityFund column period compact * ~&lt;/div&gt;

</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;div style="display:none"&gt;~ http://www.blackrock.com/role/ScheduleExpenseExampleTransposedBlackRockLong-HorizonEquityFund column period compact * ~&lt;/div&gt;

</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;div style="display:none"&gt;~ http://www.blackrock.com/role/ScheduleExpenseExampleNoRedemptionTransposedBlackRockLong-HorizonEquityFund column period compact * ~&lt;/div&gt;

</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;div style="display:none"&gt;~ http://www.blackrock.com/role/ScheduleAnnualTotalReturnsBlackRockLong-HorizonEquityFundBarChart column period compact * ~&lt;/div&gt;

</rr:BarChartTableTextBlock>
  <rr:PerformanceTableTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;div style="display:none"&gt;~ http://www.blackrock.com/role/ScheduleAverageAnnualTotalReturnsTransposedBlackRockLong-HorizonEquityFund column period compact * ~&lt;/div&gt;

</rr:PerformanceTableTextBlock>
  <rr:PerformanceTableMarketIndexChanged contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;The benchmarks against which the Fund measured its performance prior to October 15, 2012, the S&amp;amp;P 500 Index, the FTSE World Index, the FTSE World (ex US) Index and the Reference Benchmark, were replaced with the Morgan Stanley Capital International (&amp;#8220;MSCI&amp;#8221;) All Country World Index (&amp;#8220;ACWI&amp;#8221;), a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed and emerging markets. Fund management believes the MSCI ACWI is more relevant to the Fund&amp;#8217;s new investment strategies.&lt;/font&gt;</rr:PerformanceTableMarketIndexChanged>
  <rr:ExpensesDeferredChargesTextBlock contextRef="Duration_01Mar2011_28Feb2012S000002718_Member">&lt;font style="FONT-FAMILY: ARIAL" size="2"&gt;A contingent deferred sales charge (&amp;#8220;CDSC&amp;#8221;) of 1.00% is assessed on certain redemptions of Investor&amp;nbsp;A Shares made within 18&amp;nbsp;months after purchase where no initial sales charge was paid at time of purchase as part of an investment of $1,000,000 or more. &lt;/font&gt;</rr:ExpensesDeferredChargesTextBlock>
  <rr:PortfolioTurnoverRate decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_Member" unitRef="pure">0.37</rr:PortfolioTurnoverRate>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.0525</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">0</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice id="Item_2" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure">0.01</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice id="Item_3" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure">0.045</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice id="Item_4" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:DistributionAndService12b1FeesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">0.005</rr:DistributionAndService12b1FeesOverAssets>
  <rr:DistributionAndService12b1FeesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
  <rr:DistributionAndService12b1FeesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure">0.01</rr:DistributionAndService12b1FeesOverAssets>
  <rr:DistributionAndService12b1FeesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure">0.01</rr:DistributionAndService12b1FeesOverAssets>
  <rr:DistributionAndService12b1FeesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:Component1OtherExpensesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.0021</rr:Component1OtherExpensesOverAssets>
  <rr:Component1OtherExpensesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure">0.0028</rr:Component1OtherExpensesOverAssets>
  <rr:Component1OtherExpensesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure">0.0022</rr:Component1OtherExpensesOverAssets>
  <rr:Component1OtherExpensesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure">0.002</rr:Component1OtherExpensesOverAssets>
  <rr:Component1OtherExpensesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">0.0047</rr:Component1OtherExpensesOverAssets>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.0021</rr:OtherExpensesOverAssets>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure">0.0028</rr:OtherExpensesOverAssets>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure">0.0022</rr:OtherExpensesOverAssets>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure">0.002</rr:OtherExpensesOverAssets>
  <rr:OtherExpensesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">0.0047</rr:OtherExpensesOverAssets>
  <rr:AcquiredFundFeesAndExpensesOverAssets id="Item_5" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.0003</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:AcquiredFundFeesAndExpensesOverAssets id="Item_6" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure">0.0003</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:AcquiredFundFeesAndExpensesOverAssets id="Item_7" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure">0.0003</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:AcquiredFundFeesAndExpensesOverAssets id="Item_8" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure">0.0003</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:AcquiredFundFeesAndExpensesOverAssets id="Item_9" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">0.0003</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:ExpensesOverAssets id="Item_10" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.0129</rr:ExpensesOverAssets>
  <rr:ExpensesOverAssets id="Item_11" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure">0.0211</rr:ExpensesOverAssets>
  <rr:ExpensesOverAssets id="Item_12" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure">0.0205</rr:ExpensesOverAssets>
  <rr:ExpensesOverAssets id="Item_13" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure">0.0103</rr:ExpensesOverAssets>
  <rr:ExpensesOverAssets id="Item_14" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">0.018</rr:ExpensesOverAssets>
  <rr:NetExpensesOverAssets id="Item_15" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.0129</rr:NetExpensesOverAssets>
  <rr:NetExpensesOverAssets id="Item_16" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure">0.0211</rr:NetExpensesOverAssets>
  <rr:NetExpensesOverAssets id="Item_17" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure">0.0205</rr:NetExpensesOverAssets>
  <rr:NetExpensesOverAssets id="Item_18" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure">0.0103</rr:NetExpensesOverAssets>
  <rr:NetExpensesOverAssets id="Item_19" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">0.0173</rr:NetExpensesOverAssets>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.008</rr:ManagementFeesOverAssets>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure">0.008</rr:ManagementFeesOverAssets>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure">0.008</rr:ManagementFeesOverAssets>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure">0.008</rr:ManagementFeesOverAssets>
  <rr:ManagementFeesOverAssets decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">0.008</rr:ManagementFeesOverAssets>
  <rr:AnnualReturn2006 id="Item_20" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.2204</rr:AnnualReturn2006>
  <rr:AnnualReturn2007 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.1971</rr:AnnualReturn2007>
  <rr:AnnualReturn2008 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">-0.3495</rr:AnnualReturn2008>
  <rr:AnnualReturn2009 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.2674</rr:AnnualReturn2009>
  <rr:AnnualReturn2010 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.1271</rr:AnnualReturn2010>
  <rr:AnnualReturn2011 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">-0.0753</rr:AnnualReturn2011>
  <rr:BarChartHighestQuarterlyReturn decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.1677</rr:BarChartHighestQuarterlyReturn>
  <rr:BarChartLowestQuarterlyReturn decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">-0.184</rr:BarChartLowestQuarterlyReturn>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">-0.1238</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01Mar2011_28Feb2012AfterTaxesOnDistributions_MemberS000002718_MemberC000007412_Member" unitRef="pure">-0.132</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01Mar2011_28Feb2012AfterTaxesOnDistributionsAndSales_MemberS000002718_MemberC000007412_Member" unitRef="pure">-0.0807</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure">-0.1229</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure">-0.0905</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure">-0.0726</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">-0.0793</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberStandardPoorsSPFiveHundredIndex_Member" unitRef="pure">0.0211</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberFWorldIndex_Member" unitRef="pure">-0.0648</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberFtseWorldExUsIndex_Member" unitRef="pure">-0.1286</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberMsciAllCountryWorldIndex_Member" unitRef="pure">-0.0735</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear01 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberReferenceBenchmark_Member" unitRef="pure">-0.0409</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">-0.0051</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01Mar2011_28Feb2012AfterTaxesOnDistributions_MemberS000002718_MemberC000007412_Member" unitRef="pure">-0.0125</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01Mar2011_28Feb2012AfterTaxesOnDistributionsAndSales_MemberS000002718_MemberC000007412_Member" unitRef="pure">-0.008</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure">-0.0061</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure">-0.002</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure">0.0082</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">0.0018</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberStandardPoorsSPFiveHundredIndex_Member" unitRef="pure">-0.0025</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberFWorldIndex_Member" unitRef="pure">-0.014</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberFtseWorldExUsIndex_Member" unitRef="pure">-0.0252</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberMsciAllCountryWorldIndex_Member" unitRef="pure">-0.0193</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear05 decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberReferenceBenchmark_Member" unitRef="pure">-0.0105</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnSinceInception id="Item_21" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure">0.0359</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception id="Item_22" decimals="4" contextRef="Duration_01Mar2011_28Feb2012AfterTaxesOnDistributions_MemberS000002718_MemberC000007412_Member" unitRef="pure">0.0279</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception id="Item_23" decimals="4" contextRef="Duration_01Mar2011_28Feb2012AfterTaxesOnDistributionsAndSales_MemberS000002718_MemberC000007412_Member" unitRef="pure">0.0267</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception id="Item_24" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure">0.0368</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception id="Item_25" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure">0.0372</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception id="Item_26" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure">0.0477</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception id="Item_27" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">0.0413</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberStandardPoorsSPFiveHundredIndex_Member" unitRef="pure">0.0264</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberFWorldIndex_Member" unitRef="pure">0.0281</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberFtseWorldExUsIndex_Member" unitRef="pure">0.0293</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberMsciAllCountryWorldIndex_Member" unitRef="pure">0.0156</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnSinceInception decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberReferenceBenchmark_Member" unitRef="pure">0.0286</rr:AverageAnnualReturnSinceInception>
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_28" xsi:nil="true" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007412_Member" unitRef="pure" />
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_29" xsi:nil="true" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007413_Member" unitRef="pure" />
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_30" xsi:nil="true" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007414_Member" unitRef="pure" />
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_31" xsi:nil="true" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000007415_Member" unitRef="pure" />
  <rr:FeeWaiverOrReimbursementOverAssets id="Item_32" decimals="4" contextRef="Duration_01Mar2011_28Feb2012S000002718_MemberC000047292_Member" unitRef="pure">-0.0007</rr:FeeWaiverOrReimbursementOverAssets>
  <link:footnoteLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">
    <link:loc xlink:type="locator" xlink:href="#Item_4" xlink:label="MaximumDeferredSalesChargeOverOfferingPrice" />
    <link:footnote xlink:type="resource" xlink:label="footnote_MaximumDeferredSalesChargeOverOfferingPrice" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_MaximumDeferredSalesChargeOverOfferingPrice">A contingent deferred sales charge ("CDSC") of 1.00% is assessed on certain redemptions of Investor A Shares made within 18 months after purchase where no initial sales charge was paid at time of purchase as part of an investment of $1,000,000 or more.</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="MaximumDeferredSalesChargeOverOfferingPrice" xlink:to="footnote_MaximumDeferredSalesChargeOverOfferingPrice" />
    <link:loc xlink:type="locator" xlink:href="#Item_3" xlink:label="MaximumDeferredSalesChargeOverOfferingPrice_2" />
    <link:footnote xlink:type="resource" xlink:label="footnote_MaximumDeferredSalesChargeOverOfferingPrice_2" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_MaximumDeferredSalesChargeOverOfferingPrice_2">The CDSC is 4.50% if shares are redeemed in less than one year. The CDSC for Investor B Shares decreases for redemptions made in subsequent years. After six years there is no CDSC on Investor B Shares. (See the section "Details about the Share Classes - Investor B Shares" for the complete schedule of CDSCs.)</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="MaximumDeferredSalesChargeOverOfferingPrice_2" xlink:to="footnote_MaximumDeferredSalesChargeOverOfferingPrice_2" />
    <link:loc xlink:type="locator" xlink:href="#Item_2" xlink:label="MaximumDeferredSalesChargeOverOfferingPrice_3" />
    <link:footnote xlink:type="resource" xlink:label="footnote_MaximumDeferredSalesChargeOverOfferingPrice_3" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_MaximumDeferredSalesChargeOverOfferingPrice_3">There is no CDSC on Investor C Shares after one year.</link:footnote>
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="MaximumDeferredSalesChargeOverOfferingPrice_3" xlink:to="footnote_MaximumDeferredSalesChargeOverOfferingPrice_3" />
    <link:loc xlink:type="locator" xlink:href="#Item_5" xlink:label="AcquiredFundFeesAndExpensesOverAssets" />
    <link:footnote xlink:type="resource" xlink:label="footnote_AcquiredFundFeesAndExpensesOverAssets" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_AcquiredFundFeesAndExpensesOverAssets">The Total Annual Fund Operating Expenses do not correlate to the ratio of expenses to average net assets given in the Fund's most recent annual report, which does not include Acquired Fund Fees and Expenses.</link:footnote>
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    <link:loc xlink:type="locator" xlink:href="#Item_7" xlink:label="Item_7_lbl" />
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    <link:loc xlink:type="locator" xlink:href="#Item_11" xlink:label="Item_11_lbl" />
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    <link:loc xlink:type="locator" xlink:href="#Item_14" xlink:label="Item_14_lbl" />
    <link:footnoteArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote" xlink:from="Item_14_lbl" xlink:to="footnote_AcquiredFundFeesAndExpensesOverAssets" use="optional" priority="0" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="#Item_15" xlink:label="NetExpensesOverAssets" />
    <link:footnote xlink:type="resource" xlink:label="footnote_NetExpensesOverAssets" xlink:role="http://www.xbrl.org/2003/role/footnote" xml:lang="en-US" id="footnote_NetExpensesOverAssets">As described in the "Management of the Fund" section of the Fund's prospectus on page 36, BlackRock has contractually agreed to waive and/or reimburse fees and/or expenses in order to limit Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements (excluding Dividend Expense, Interest Expense, Acquired Fund Fees and Expenses and certain other Fund expenses) to 1.43% (for Investor A Shares), 2.29% (for Investor B and C Shares), 1.15% (for Institutional Shares) and 1.70% (for Class R Shares) of average daily net assets until March 1, 2013. The contractual agreement may be terminated upon 90 days' notice by a majority of the independent trustees of the Fund or by a vote of a majority of the outstanding voting securities of the Fund.</link:footnote>
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    <link:loc xlink:type="locator" xlink:href="#Item_17" xlink:label="Item_17_lbl" />
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    <link:loc xlink:type="locator" xlink:href="#Item_18" xlink:label="Item_18_lbl" />
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    <link:loc xlink:type="locator" xlink:href="#Item_19" xlink:label="Item_19_lbl" />
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    <link:loc xlink:type="locator" xlink:href="#Item_23" xlink:label="Item_23_lbl" />
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    <link:loc xlink:type="locator" xlink:href="#Item_24" xlink:label="Item_24_lbl" />
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