Function that goes (displays) line "n" in a qm-item

[ssimop]

I understand, and used very frequently, that mac+ opens a macro in editor. I wonder whether there exists an ancillary function that goes (displays) line "n" in this macro. I have some ideas to write it, but it is obvious anything ready - written by Gintaras - will be much more efficient and elegant.

Many thanks in advance.