NEW IN: 5.1.23 Filter operators support multiple parameters which are separated by a , character.
For example: [param1],[param2] or <param1>,{param2}
I just tested this on both 5.1.23 and 5.2.0pre. I created one tiddler containing
```and another tiddler with the four tags (note capitalization and spaces in the tag values).
It does seem to work on both versions of TW
-e