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      URL Filter syntaxBy Opera Software · Tuesday, May 22, 2012 8 
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      opera.extension.getFile()By Opera Software · Wednesday, May 16, 2012 46 
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      Resource Loader APIBy Opera Software · Wednesday, May 16, 2012 25 Because of the security model that Opera extensions use, simply grabbing a local file from some parts of an extension has not been possible. For example, an injected script could not access an image file, even if it was within the same extension package. The Resource Loader API aims to solve this problem by making it easy to access any file within an extension package, from any part of the extension. Read more… 
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      opera.extension.getScreenshot() and BrowserTab.getScreenshot()By Opera Software · Wednesday, May 16, 2012 10 
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      Screenshot APIBy Opera Software · Wednesday, May 16, 2012 23 The Screenshot API for Opera extensions enables a screenshot to be taken of a page within a tab. Only the visible portion of the page is included in the screenshot, excluding the browser chrome (i.e. no toolbars and scrollbars, etc.). Read more… 
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      RuleOptions.thirdPartyBy Opera Software · Wednesday, May 16, 2012 6 
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      RuleOptions.resourcesBy Opera Software · Wednesday, May 16, 2012 8 
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      RuleOptions.includeDomainsBy Opera Software · Wednesday, May 16, 2012 8