A MOVE or MOVEL may name an indicator as its result field. Every family is
supported: numbered (*IN01-*IN99), *INLR, control level (*INL1-*INL9),
external (*INU1-*INU8), and halt (*INH1-*INH9).
An indicator is one byte, so the source is reduced to a single character and the
indicator is set ON iff that character is '1'. MOVE takes the rightmost
character of the source; MOVEL takes the leftmost:
(c2 holds '10')
C MOVE '1' *INL1 (L1 on)
C MOVEL '1' *INU1 (U1 on)
C MOVE '1' *INH1 (H1 on)
C MOVE c2 *INL1 (rightmost '0' → L1 off)
C MOVEL c2 *INL2 (leftmost '1' → L2 on)
A character literal Factor 2 must be exactly '0' or '1'; anything else is
rejected (TRN3032).
A character variable source is always accepted - only its
aligned character reaches the indicator.