The AmigaGuide authoring mode for GoldED has been updated to support syntax validation, using the GuideCheck validator by Guido Mersmann. Validation errors are displayed "in" the editor window (in a resizable container next to the text):
Screenshot

You can click on warnings to navigate to the offending line. About GuideCheck: GuideCheck is a tool for checking AmigaGuide files. A detailed report on any error is given and allows you to find and fix these bugs easily. GuideCheck finds problems such as nodes that are orphaned (not linked to), links that ave no existing target, syntax errors, links to nonexisting files etc.
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