Paul Gilbert
Wed, 13 May 1998 17:23:40 -0400

>I think it should return T/F rather than text.  You could have the reason
>returned as an attribute or printed as a warning().

I'm doing this only for compatability with Splus. In fact, the way I've used it
in my code is


which gives the T/F result.

I think the tolerance is a good idea. Thanks for pointing out other problems. I
just fixed one of them. I'll circulate a new version tomorrow.


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