Orsburn (Static Content)

Eclipse maintains a directory at the root of a project with the name ".settings."  If, for whatever reason, Eclipse can't seem to find this directory, or the files in it, Eclipse will report an error vaguely stating a problem "Detecting library folders."  Removing the .settings directory will solve the problem. Presumably, Eclipse rebuilds any information it maintains in that directory, though it's not clear what the information is.  Assume that any arbitrary details that seem off might be associated with removing this folder. The "Detecting library folders" error dialogue window. Due to the non sequitur nature of the error, there isn't much context to work off of other than the "org.eclipse.wst.validation" identifier, and the "detecting library folders" pseudo-clue.  As such, there isn't much that comes back from searches around the web for solutions to the issue, but the combination of the three references

Eclipse PDT (PHP Development Tools) has the ability to quickly show the definitions of functions and methods by hovering the cursor over the parentheses of a reference.  This feature is an extension of the typical docblock or signature reveal when hovering over a method or function call itself. It's not as easy to hover over a parenthesis as it is to hover over a function reference, so invoking the tip can be a little clumsy.  And there's another peculiarity with the feature too.  Typically, the inline popups like this are "focusable" by moving the mouse from a hover into the pop-up.  For these pop-ups though, they immediately disappear when moving away from the parentheses.  Instead, use the F2 key to focus the pop-up.  In spite of these usability matters, the feature is handy as a quick reference and is welcome. It's possible that other Eclipse plug-ins have a similar feature to, so in order to get an idea as to whether or not this is a feature of th