DESCRIPTION OF DIAGNOSTICS
    These messages are classified as follows (listed in increasing ord
+er of
    desperation):

        (W) A warning (optional).
        (D) A deprecation (enabled by default).
        (S) A severe warning (enabled by default).
        (F) A fatal error (trappable).
        (P) An internal error you should never see (trappable).
=====>  (X) A very fatal error (nontrappable).                        
        (A) An alien error message (not generated by Perl).

...

    Trappable errors may be trapped using the eval operator.  See
    "eval" in perlfunc.  In almost all cases, warnings may be selectiv
+ely
    disabled or promoted to fatal errors using the warnings pragma.
    See warnings.


Out of memory! (#1)
    (X) The malloc() function returned 0, indicating there was insuffi
+cient
    remaining memory (or virtual memory) to satisfy the request.  Perl
+ has
    no option but to exit immediately.

    At least in Unix you may be able to get past this by increasing yo
+ur
    process datasize limits: in csh/tcsh use limit and
    limit datasize n (where n is the number of kilobytes) to check
    the current limits and change them, and in ksh/bash/zsh use ulimit
+ -a
    and ulimit -d n, respectively.
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