Pcs

The names of the product elements.

The name of the type.

The node's identity label for relation purposes: its Self when it has one - stable across independently edited copies of the same document, which is exactly what a label needs to be for relations from different trees to ever compare equal - otherwise its NodePath, which is only stable within one parse of one tree (any edit that shifts a sibling's index changes it). Real IDML page items (Rectangle, TextFrame, Group, Page, Spread, Story, ...) always carry Self; it's specifically wrapper elements (Properties, the PathGeometry chain, ParagraphStyleRange/CharacterStyleRange/Content, and similar) that don't - the same gap TreeMatcher/EditDetector already have, since neither looks at Self-less nodes at all. A path-labelled node will only ever match itself, within the same tree, never a node from another tree - it can't wrongly match an unrelated node, but nor can it usefully participate in a merge; that's a known limitation, not a defect, until story-text-level merging is built.

Legacy convenience paired with leafText. PCS conversion no longer folds text into leaves.

Legacy convenience for reading all character data from a text-only leaf.

Decomposes root's whole subtree into Pcs and Content relations.