76?S ...[??? FLIPW SECT CENT FGN 9 DOC
76HL # THIS MACRO SWITCHES A MASK IN A SPECIFIED WORD
773= #MAC FLIPW
77GW #ACC %B
782G (
78G6 LDX 0 %B
78^Q ERS 0 %A
79FB )
79^2 #ACC %B
7=DL #SKI
7=Y= ERS %B %A
7?CW #NOR