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 &lt;p style="MARGIN-TOP: 18px; MARGIN-BOTTOM: 0px"&gt;&lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;&lt;b&gt;6. Income
 Taxes&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company
 uses the liability method of accounting for income taxes. Under
 this method, deferred tax assets and liabilities are recognized for
 the expected future tax consequences of temporary differences
 between the carrying amounts and the tax bases of assets and
 liabilities. Deferred tax assets and liabilities are measured using
 enacted tax rates expected to apply to taxable income in the years
 in which those temporary differences are expected to be recovered
 or settled. The effect of a change in tax rates on deferred tax
 assets and liabilities will be recognized in the period that
 includes the enactment date. A valuation allowance is established
 against the deferred tax assets to reduce their carrying value to
 an amount that is more likely than not to be realized.&lt;/font&gt;&lt;/p&gt;
 &lt;p style="MARGIN-TOP: 12px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px"&gt;
 &lt;font style="FONT-FAMILY: Times New Roman" size="2"&gt;The Company
 computes its interim provision for income taxes by applying the
 estimated annual effective tax rate to income from operations and
 adjusts the provision for discrete tax items occurring in the
 period. The Company&amp;#x2019;s effective tax rate for the three months
 ended July&amp;#xA0;31, 2013 was 1.3 percent compared to
 (1.6)&amp;#xA0;percent for the three&amp;#xA0;months ended July&amp;#xA0;31,
 2012. During the three months ended July&amp;#xA0;31, 2013, a benefit
 of $0.4 million was recorded as an item related to a 2013 Texas
 state research and development credit, which was enacted in the
 current fiscal quarter. The negative effective tax rate for the
 three months ended July&amp;#xA0;31, 2012, was primarily attributable
 to estimated foreign and state income tax expense compared to
 consolidated pre-tax book loss.&lt;/font&gt;&lt;/p&gt;
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