Quick way to show documentation in NetBeans

Holding the control key [command key in Mac OS X] in NetBeans will mark functions, methods, and variables with an underline. Holding the key and hovering over functions and methods will reveal their documentation in a sort of tool tip, if such documentation is available. This is in addition to opening the documentation panel with the Control + Shift + Space key combination.

Function documentation on usage with Control + Hover.

The presentation of the documentation tip is available with the Control + Hover event on method definitions as well as their usage. Oddly however, it's not available with function definitions. With function definitions, the IDE presents a brief, and unhelpful tool tip just identifying the function and the file it belongs to.

Function documentation on definition with Control + Hover. Note that nothing meaningful

is rendered as it is with the usage example.

It should be noted, that the details identified here are using NetBeans 8.1 with PHP on Windows 7 Professional Service Pack 1, as well as Mac OS X 10.11.2 and Ubuntu 15.10. The behavior may be different with other languages. A quick check with some JavaScript code confirmed that everything works as expected with that language.

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