http://test.dwagn.org/wagn/find_non_empty_cards
"not" in WQL should work with simple card defs
fyi, operators are more efficient that relationships, so, ceteris paribus, it's best to prefer them.
--Ethan McCutchen.....Tue Mar 01 09:12:49 -0800 2011
workaround (as well as being more efficient) is:
{"content": ["ne",""] }
--John Abbe.....Tue Mar 01 11:43:27 -0800 2011
actually, the above works now
--Ethan McCutchen.....Tue Nov 29 09:55:26 -0800 2011