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Flexera Software - Software Licensing, Installation and Application Packaging

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Home : Study Guides and Literature Essays Study guides are offered for free by GradeSaver on novels, plays, poems and films ranging from Animal Farm to Yonnondio: From the Thirties . Each study guide includes essays, an in-depth chapter-by-chapter summary and analysis, character list, theme list, historical context, author biography and quiz.

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http://developers.facebook.com/blog/post/2011/05/13/how-to--handle-expired-access-tokens/

One of the most frequently asked for “How-To” requests from developers is how to handle invalid access tokens. Access tokens for users can become invalid due to various reasons. In most cases, they can expire if it’s past the time specified by the ‘expires’ field (by default access token have a 2 hour lifetime).