TSRef - TypoScript Reference
4.1.17. PIDinRootline
Syntax:
[PIDinRootline = pages-uid, pages-uid, ...]
Comparison:
This checks if one of the figures in "treeLevel" is a PID (pages-uid) in the rootline
Example:
This changes something with the template, if the page viewed is or is a subpage to page 34 or page 36
[PIDinRootline = 34,36]