NAME
    isobjtype - whether a string names an object type

SYNOPSIS
    isobjtype(str)

TYPES
    str		string

    return	0 or 1

DESCRIPTION
    isobjtype(str) returns 1 or 0 according as an object type with name
    str has been defined or not defined.

EXAMPLE
    > isobjtype("xy")
	0

    > obj xy {x, y}
    > isobjtype("xy")
	1

LIMITS
    none

LINK LIBRARY
    none - XXX ???

SEE ALSO
    obj,
    isassoc, isatty, isblk, isconfig, isdefined, iserror, iseven, isfile,
    ishash, isident, isint, islist, ismat, ismult, isnull, isnum, isobj,
    isodd, isprime, isrand, israndom, isreal, isrel,
    issimple, issq, isstr, istype