From p.singleton@keele.ac.uk  Fri Apr  7 14:57:34 2000
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Date: Fri, 07 Apr 2000 00:02:16 +0100
From: Paul Singleton <p.singleton@keele.ac.uk>
Organization: SmartArts Computing Consultancy
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To: SWI Prolog <prolog@swi.psy.uva.nl>
Subject: Alien goal
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What's an "Alien goal", as in:

  ERROR: Trapped signal 22 (abort), aborting ...
        [8] 'text/html'='text/html'
      <Alien goal>
        [1] '$toplevel'

Paul Singleton

