| purpose | filter the input by searching list fields for a value |
|---|---|
| input | a selection of titles |
| suffix | F=the name of a field (defaults to list) |
| parameter | S=a possible value to be found in list field F |
| output | those input tiddlers in which the list field F contains the value S |
! output | those input tiddlers in which the list field F does not contain the value S |