loop through /vt./ To process each element of a list of
things. "Hold on, I've got to loop through my paper mail."
Derives from the computer-language notion of an iterative loop;
compare `cdr down' (under cdr), which is less common among C
and Unix programmers. ITS hackers used to say `IRP over' after
an obscure pseudo-op in the MIDAS PDP-10 assembler (the same IRP op
can nowadays be found in Microsoft's assembler).
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