Alternative text (alt text) is meant for readers who cannot see an image, such as blind readers and readers who use a text or mobile browser. It should summarize an image's purpose, and should not duplicate its caption. Every image should have alt text, except for purely decorative images, which should instead have "|alt=|link=".
The following table shows images and captions on the left, and alt text and captions on the right: the right column is what a visually impaired reader will hear. This table was computed from the copy of Public finance cached on 16 May 2013 at 15:40.
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Government-Vedder-Highsmith-detail-1.jpeg
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Budgeted revenues of governments in 2006.
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Economic Structure of the General Government.
Figure 1: General Government (IMF Government Finance Statistics Manual 2001(Washington, 2001) pp.13
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Economic Structure of the Public Sector.
Figure 2: Public Sector(IMF Government Finance Statistics Manual 2001(Washington, 2001) pp.15
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