would be really useful to have a x (negative) option to apply to a check box..

to clarify...

tick for yes/positive cross for no/negative blank for no response/not checked/not replied one way im playing with using acrobat is for collaborating on a testing of some LMS modules so a cross would be fail tick for fixed/working and obviously blank for not tested.

The other (and much more important way) is for guest list for my stag do to whether they are attending then golf or not or not responded yet

Cheers

Adam