Add comments to Custom Functions like in Plug-in functions

Idea created by Menno on Jan 27, 2018

    Many plug-ins add very helpful comment paragraphs when a function is selected in a calculation.


    This can be very helpful for complex custom functions too. So I would like to have an entry-box in the CF-definition, where a comment can be added that is shown as a tooltip and as a comment-section: /* my comments */ when used in a formula.