GDP: end singleton lists with a period?

[Graham Percival]

OK, silly question, but I simply cannot make up my mind.  If we
have a single entry in a list in the @seealso section, should it
end with a period or not?  For example, in this:

---
See also

Music Glossary: chord.

Snippets: Simultaneous 
---

should remove the period after "chord", or add one after
"simultaenous" ?


I promise that this time, whatever the outcome of the discussion, I
will *never* reconsider this again.

Cheers,
- Graham