[Groff] Numbers and blank lines

[Scott Moore]

Keeping with the current thread

Re: Allowing user also to check if a line starts with
    horizontal space

What affect would this have on the .nm macro ?

Further, would this provide for the ability to insert
numbered blank lines in the text ?  Is there another
way to insert a numbered blank line in numbered line
output that does not rely on blank lines in the source
text ?

Scott