document != as a filtering operator

diff --git a/man/man5/unlang.5 b/man/man5/unlang.5
index 81738865a642fd31653c098f02f74f75cf045f47..2e18d5db3366d79915e9a1b146ee4847f3cbab82 100644 (file)
--- a/man/man5/unlang.5
+++ b/man/man5/unlang.5
@@ -761,6 +761,9 @@ to match in order for the attribute to remain in the list.
 
 Note that this operator is very different than the '=' operator listed
 above!
+.IP !=
+Keep all attributes with matching name, and value not equal to the
+given one.
 .IP <=
 Keep all attributes having values less than, or equal to, the value
 given here.  Any larger value is replaced by the value given here.  If