# tree

## Purpose

Search node's entire subtree for a match.

## Remarks

Overuse of this may degrade analyzer performance.

Note that "t" is short for "trigger", not "tree".

## Example

# If a node labeled _det is followed by a node with a thousand child nodes, that subtree
# will be searched for a node with a _noun label. So tree can be costly and wildly inaccurate,
# and must be used with caution.
@RULES
_np <- _det _noun [tree] @@

## See Also

singlet, Phrase Element Modifiers.