file: job.t package: muf status: alpha
Remove first element from a block, leaving it on stack.
Stack: [ 'a' 'b' 'c' 'd' | Stack: [ 'a' 'b' 'c' 'd' | |shift Stack: [ 'b' 'c' 'd' | 'a'
See section |shiftp. See section |unshift. See section ]shift. See section |pop.
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