hoge@hqafsc-vax.UUCP.UUCP (02/23/87)
There's a lexical function which does exactly what you're looking for (I think). It's F$TYPE(symbol) and returns one of three values INTEGER if the symbol is an integer STRING if it's a string or a null string if its _undefined_ Hope this helps.... Scott Hoge TRW, Inc. hoge@hqafsc-vax.ARPA ------