Cost of revenue:

Common stock and additional paid-in capital

Accumulated other comprehensive income (loss)

Restructuring charges, net

To supplement our consolidated financial statements presented on a GAAP basis, Autodesk provides investors with certain non-GAAP measures including non-GAAP net income, non-GAAP net income per share, non-GAAP cost of license and other revenue, non-GAAP gross margin, non-GAAP operating expenses, non-GAAP income from operations, non-GAAP interest and other income, net and non-GAAP provision for income taxes. These non-GAAP financial measures are adjusted to exclude certain costs, expenses, gains and losses, including stock-based compensation expense, amortization of purchased intangibles, in-process research and development expenses, restructuring charges, goodwill impairment, establishment of a valuation allowance on certain deferred tax assets and related income tax expenses. See our reconciliation of GAAP financial measures to non-GAAP financial measures herein. We believe these exclusions are appropriate to enhance an overall understanding of our past financial performance and also our prospects for the future, as well as to facilitate comparisons with our historical operating results. These adjustments to our GAAP results are made with the intent of providing both management and investors a more complete understanding of Autodesk's underlying operational results and trends and our marketplace performance. For example, the non-GAAP results are an indication of our baseline performance before gains, losses or other charges that are considered by management to be outside our core operating results. In addition, these non-GAAP financial measures are among the primary indicators management uses as a basis for our planning and forecasting of future periods.

There are limitations in using non-GAAP financial measures because the non-GAAP financial measures are not prepared in accordance with generally accepted accounting principles and may be different from non-GAAP financial measures used by other companies. The non-GAAP financial measures are limited in value because they exclude certain items that may have a material impact upon our reported financial results. The presentation of this additional information is not meant to be considered in isolation or as a substitute for the directly comparable financial measures prepared in accordance with generally accepted accounting principles in the United States. Investors should review the reconciliation of the non-GAAP financial measures to their most directly comparable GAAP financial measures as provided in the tables accompanying this press release.

Stock-based compensation expense

Stock-based compensation expense

Stock-based compensation expense

Stock-based compensation expense

Stock-based compensation expense

Amortization of customer relationships and trademarks

In-process research and development

Stock-based compensation expense

Amortization of customer relationships and trademarks

In-process research and development

Establishment of valuation allowance on deferred tax assets

Stock-based compensation expense

Amortization of customer relationships and trademarks

Establishment of valuation allowance on deferred tax assets

Stock-based compensation expense

Amortization of customer relationships and trademarks

Establishment of valuation allowance on deferred tax assets

GAAP diluted shares used in per share calculation

Revenue by Segment (in millions):***

% of Total Rev from AutoCAD and AutoCAD LT***

Favorable (Unfavorable) Impact of U.S. Dollar Translation Relative to Foreign Currencies Compared to Comparable Prior Year Period (in millions):

Gross Margin by Segment (in millions):***

Maintenance Installed Base **

* Totals may not agree with the sum of the components due to rounding.

** The second quarter of fiscal 2010 maintenance installed base includes a one-time adjustment of 581,000 educational seats for users migrated to a standard educational maintenance plan. These users were not previously captured in our maintenance installed base.

*** In the third quarter of fiscal 2010, Autodesk changed its methodology for allocating certain revenue transactions, including gains and losses from foreign currency. The second quarter of fiscal 2010 amounts have been reclassified to conform to the current presentation. The change of methodology did not have a material effect on any other period.

(1) To supplement our consolidated financial statements presented on a GAAP basis, Autodesk provides investors with certain non-GAAP measures including non-GAAP net income, non-GAAP net income per share, non-GAAP cost of license and other revenue, non-GAAP gross margin, non-GAAP operating expenses, non-GAAP income from operations, non-GAAP interest and other income, net and non-GAAP provision for income taxes. These non-GAAP financial measures are adjusted to exclude certain costs, expenses, gains and losses, including stock-based compensation expense, restructuring charges, amortization of purchased intangibles, goodwill impairment, establishment of a valuation allowance on certain deferred tax assets and related income tax expenses. See our reconciliation of GAAP financial measures to non-GAAP financial measures herein. We believe these exclusions are appropriate to enhance an overall understanding of our past financial performance and also our prospects for the future, as well as to facilitate comparisons with our historical operating results. These adjustments to our GAAP results are made with the intent of providing both management and investors a more complete understanding of Autodesk's underlying operational results and trends and our marketplace performance. For example, the non-GAAP results are an indication of our baseline performance before gains, losses or other charges that are considered by management to be outside our core operating results. In addition, these non-GAAP financial measures are among the primary indicators management uses as a basis for our planning and forecasting of future periods.

There are limitations in using non-GAAP financial measures because the non-GAAP financial measures are not prepared in accordance with generally accepted accounting principles and may be different from non-GAAP financial measures used by other companies. The non-GAAP financial measures are limited in value because they exclude certain items that may have a material impact upon our reported financial results. The presentation of this additional information is not meant to be considered in isolation or as a substitute for the directly comparable financial measures prepared in accordance with generally accepted accounting principles in the United States. Investors should review the reconciliation of the non-GAAP financial measures to their most directly comparable GAAP financial measures as provided in the tables accompanying Autodesk's press release.