Documentation of libraries in the Editor

[ricardojlrufino]

A way to be able to show documentation for also libraries, and improve usability as that documentation appears to the user would be interesting.

Could appear when the user holds CTRL upon the name (as in the image attached).

Or could come along with autocomplete (#849)

[ricardojlrufino]

This implementation has already started.
PR: #2563

Need the definition of standardization of the source code documentation.