*Change parameters* flag is turned on and a parameter
(permission flags, all types of profiles, channel tags and ranges)
for an entry is not set the parameter (value, list or range) is cleared
-(unset). This allows the previous/next matching entry in the sequence to set
-it.
+(unset). This allows the next matching entry (if any) in the sequence
+to set it.
For example, say you have a wildcard account with the theme set to Gray,
and an admin account with the Blue theme. Unchecking the theme checkbox