Is there a simple way to add a vertical line separator between columns?

[Kevin Cole]

The subject line pretty much says it all:

I have two columns of additional verse lyrics to a song following the
score, and I'm wondering if there's a simple way  to add a vertical
line centered between them that is as "tall" as the two columns of
lyrics.

I'm still pretty new to LilyPond, hence the "simple". ;-)