Operator usage
- =
- "equals", enter null for empty string
- ~
- case insensitive search, use * as wildcard
- [:]
- "between", takes two colon-separated arguments
- (,,)
- "is one of", takes a comma-separated list of any
size
as argument.
<, >, <= and >= needs no explanation.
All these operators may be negated by clicking the "not"
checkbox.