I want to be able to highlight lines of text, and have all selected and partially selected lines to be remarked (// added to the start of the line.)
I also want the inverse of this function.
This feature is supported in many RL programming language interfaces. (Visual Studio, for one.)
We have hightlight tab-ify and its inverse, so the mechanism to detect lines that are highlighted and append a character on the front is already there, so what's two characters?