Checking Tag existance

[Roser Timm (KADA 31)]

Hello all,

is there a way to check the existance of a given tag before trying to checkout 
out a module with this tag?
I am asking because we have a huge piece of software with somewhat > 200 cvs 
modules.
Across all modules a special tag is set when the modules have been integrated.

Now - what we are looking for is a way to find out quickly - not after checking 
out 130 of the 200 modules - if the tag was set on the given modules.
After this has been checked we would then continue checking out all modules or 
back out.

Any ideas are appreciated.

Timm