# MATLAB ## Identification A numerical-computing environment whose `.m` source extension is expanded by the notebook as `MATrix LABoratory`. ## Notebook evidence - [[Scanned_20260730-1946|Scanned_20260730-1946]], PDF page 19. ## Relationships and evidentiary boundary [[Fortran]] · [[MMIX]] · [[IRAF64 Project]]. 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.