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    Date: Mon, 5 Jun 89 22:58:55 EDT
    From: barmar@Think.COM

       Date: Mon, 5 Jun 89  15:05:06 MDT
       From: snicoud@atc.boeing.com (Stephen Nicoud)

       How can a process get a backtrace of its own stack?

    See the section in book 2A on the Condition system and the Debugger.
    It describes a multitude of functions for getting pointers to stack
    frames and accessing information in them.  It describes just about
    everything you'd need to reimplement the debugger yourself.  Look up
    DBG:WITH-ERRING-FRAME in the index, and this should get you close
    (unfortunately, the page numbers in Symbolics indexes are only an
    approximation to reality -- hopefully this will be improved in future
    manuals written with Concordia).

Concordia, like its predecessor, uses the first page of a keyword's
section as the index reference.  So if a section begins on page 150 and
runs for four pages, all entries for that section will refer to page

    You could also look at the source to the debugger.  I believe this is
    in the Basic Source category.