Literal filter operands can be used, but such cases are better rewritten without using <<.op subfilter>>:
<<.operator-example 1 "[subfilter[one two three]addsuffix[!]]" "same as `one two three +[addsuffix[!]]`">>
The <<.op subfilter>> operator can be used to dynamically define parts of a [[filter run|Filter Run]]. This is useful for sharing a common pieces of a filter across multiple filters.
For example, this variable:
* <<display-variable recent-mods>>
can be used in one filter like this:
<<.operator-example 2 "[tag[Filter Operators]subfilter<recent-mods>addsuffix[!]]" "same as `[tag[Filter Operators]has[modified]!sort[modified]limit[5]addsuffix[!]]`">>
Variables are not the only way to define dynamic subfilters. [[Text references|TextReference]] can be used to load a subfilter from a tiddler field (see also [[Filter Parameter]]):