COMMENT ⊗ VALID 00002 PAGES C REC PAGE DESCRIPTION C00001 00001 C00002 00002 αXDEFINE ⊂↔ C00003 ENDMK C⊗; αXDEFINE ⊂⊗↔ αi\ffootnote{αs\}αk{αβ⊗↓ αXDEFINE ⊃⊗↔ αi\footnote{αs\}αk{αβ⊗↓