# Doom ## Identification The id Software game and engine lineage represented through several handheld source ports. ## Notebook evidence - [[Scanned_20260730-1946|Scanned_20260730-1946]], PDF pages 10-11. ## Relationships and evidentiary boundary [[Chocolate Doom]] · [[Heretic]] · [[Strife]]. 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.