I need LINE NUMBERS displayed in my source code .
That way, I'll be able to tell what line of source code the diagnostic message from the compilier is talking about, (instead of having to count
visually.) You know, I remember back in the good old 1980's they used to be able to do this.
I know it sounds tricky , but you think you can try . . . . ?
Tools -> Preferences
Code Editor -> Gutter
select "show line numbers in gutter"
Also possible: simply right click in the small bar left to your source code and toggle on line numbering.