AutoCAD 2018 help writes:
;| Inline |;
The single-line comment appears after formatting as any other expression; the multiple-line comment appears starting at a new line
So this should be a valid code:
(princ "\nLet's beginn.") ;| I start the comment,
continue it in second line and
finish it in third line with the ending pipe |;
But I heard that this kind of comment could create problems when compiled to FAS and to DES.
Who can confirm or not confirm these compilation issues?