such as acquisition and divestiture activity. This measure is a significant component in our incentive compensation plans.
•Adjusted Operating Income and Adjusted Operating Margin – represent operating income and operating margin, respectively, (the most comparable GAAP financial measures) before special items including restructuring and other charges, acquisition-related charges, impairment of goodwill, and other income or charges, if any. We utilize these adjusted measures in combination with operating income and operating margin to assess segment level operating performance and to provide insight to management in evaluating segment operating plan execution and market conditions. Adjusted Operating Income is a significant component in our incentive compensation plans.
•Adjusted Other Income (Expense), Net – represents net other income (expense) (the most comparable GAAP financial measure) before special items including tax sharing income related to adjustments to prior period tax returns and other items, if any.
•Adjusted Income Tax (Expense) Benefit and Adjusted Effective Tax Rate – represent income tax (expense) benefit and effective tax rate, respectively, (the most comparable GAAP financial measures) after adjusting for the tax effect of special items including restructuring and other charges, acquisition-related charges, impairment of goodwill, other income or charges, and certain significant tax items, if any.
•Adjusted Income from Continuing Operations – represents income from continuing operations (the most comparable GAAP financial measure) before special items including restructuring and other charges, acquisition-related charges, impairment of goodwill, tax sharing income related to adjustments to prior period tax returns and other tax items, other income or charges, and certain significant tax items, if any, and, if applicable, the related tax effects.
•Adjusted Earnings Per Share – represents diluted earnings per share from continuing operations (the most comparable GAAP financial measure) before special items including restructuring and other charges, acquisition-related charges, impairment of goodwill, tax sharing income related to adjustments to prior period tax returns and other tax items, other income or charges, and certain significant tax items, if any, and, if applicable, the related tax effects. This measure is a significant component in our incentive compensation plans.
•Net Sales Excluding the Impact of the Additional Week, Net Sales Growth (Decline) Excluding the Impact of the Additional Week, Organic Net Sales Growth (Decline) Excluding the Impact of the Additional Week, and Adjusted Earnings Per Share Excluding the Impact of the Additional Week – represent certain GAAP and non-GAAP financial measures excluding the impact of the additional week in the fourth quarter of the fiscal year for fiscal years which are 53 weeks in length.
•Free Cash Flow (FCF) – is a useful measure of our ability to generate cash. The difference between net cash provided by operating activities (the most comparable GAAP financial measure) and Free Cash Flow consists mainly of significant cash outflows and inflows that we believe are useful to identify. We believe Free Cash Flow provides useful information to investors as it provides insight into the primary cash flow metric used by management to monitor and evaluate cash flows generated from our operations. Free Cash Flow is defined as net cash provided by operating activities excluding voluntary pension contributions and the cash impact of special items, if any, minus net capital expenditures. Voluntary pension contributions are excluded from the GAAP financial measure because this activity is driven by economic financing decisions rather than operating activity. Certain special items, including net payments related to pre-separation tax matters and cash paid (collected)