Changing meter without meter signature.

[Scott Ballantyne]

First of all, congrats on the further excellent development of
Lilypond. It has come a long ways since I last used it, and it was
good then!

Secondly: Is there a way to specify that various measures are 5/8,
3/8, 5/4, etc., and have the bar lines placed properly, but not have
the time signature printed?

Thanks for lilypond, and thanks in advance for any suggestions.

sdb