# XHTML ## Identification HTML expressed using XML syntax, represented by several copied extension variants. ## Notebook evidence - [[Scanned_20260730-1946|Scanned_20260730-1946]], PDF page 19. ## Relationships and evidentiary boundary [[XUL]] · [[XAML]] · [[KML]]. The notebook occurrence preserves a historical compatibility or software clue. It does not alone prove installation, use, ownership, provenance, or the exact identification of uncertain handwriting.