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CD ROM Paradise Collection 4
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CD ROM Paradise Collection 4 1995 Nov.iso
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ISLIST.KEY
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1993-11-07
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333b
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7 lines
* islist internal
islist(x) gives 1 if x is a list, or 0 otherwise.
You can assume x is a list by islist(x) := 1.
See also: iscomplex, iseven, isfree, isinteger, islarger, isless, islist,
isodd, isreal, isratio, issame, isnumber.
e.g. islist([a]) gives 1, islist(3.2) gives 0.