linefeeds

I have a major brain fart. Any of you zmud gurus can refresh my memory as to how to insert a blank line before a mud output line?
Say for instance you wanted to have an extra blank line before:
You receive XXX exp. So that it looked like this:
You kill mob.
You receive XXX exp.
instead of
You kill mob.
You receive XXX exp.
Xandora
Say for instance you wanted to have an extra blank line before:
You receive XXX exp. So that it looked like this:
You kill mob.
You receive XXX exp.
instead of
You kill mob.
You receive XXX exp.
Xandora