2 islist - whether a value is a list
13 Determine if x is a list. This function will return 1 if x is
18 > print islist(lst), islist(1)
28 append, delete, insert, islist, pop, push, remove, rsearch,
30 isassoc, isatty, isblk, isconfig, isdefined, iserror, iseven, isfile,
31 ishash, isident, isint, ismat, ismult, isnull, isnum, isobj,
32 isobjtype, isodd, isprime, isrand, israndom, isreal, isrel,
33 issimple, issq, isstr, istype