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Condition handling

Actually, there's a one-click alternative to this:

    Date: Fri, 28 Sep 1990 13:17-0400
    From: KMP@STONY-BROOK.SCRC.Symbolics.COM (Kent M Pitman)

    The actual condition signalled is probably SYS:FLOAT-DIVIDE-BY-ZERO.
    You can find this out by going into the debugger and stepping back (with c-P)
    to the DBG:SIGNAL-CONDITION frame and look at the SELF argument.
    You can call TYPE-OF on that argument to find out its type.

    Date: Fri, 28 Sep 90 11:01 PDT
    From: sobeck@RUSSIAN.SPA.Symbolics.COM

    You can find this out by advancing forward a few frames in the debugger 
    (using the return key).

Clicking Mouse-Middle on the error message will describe the error object.