Action Name ------ ---- edit anterior lines MakeExtraLineA edit posterior lines MakeExtraLineBIf you want to enter multi-line comments or additional instructions, you can use this feature of IDA.
There are two kinds of extra lines: the ones generated before the instruction line and the ones generated after the instruction line.
Do not forget that the maximal number of lines for an item is 500.
IDA does not insert a comment symbol at the beginning of the lines.
See also
"How to use the notepad"
Edit|Text|Comments submenu.
How to use the Notepad