INTEGER valid(OBJNUM objnum)
This function returns one (true) if the object pointed to by objnum exists, or zero (false) if it does not.
frob_class() | size() | toerr() | tofloat() | toint() | toliteral() | toobjnum() | tostr() | tosym() | type() | valid() | fromliteral() | frob_value() | frob_handler()