Well, you're not alone :-). Here, comments from inside Lincoln Stein's CGI.

# Define the CRLF sequence.  I can't use a simple "\r\n" because the m
+eaning
# of "\n" is different on different OS's (sometimes it generates CRLF,
+ sometimes LF
# and sometimes CR).  The most popular VMS web server
# doesn't accept CRLF -- instead it wants a LR.  EBCDIC machines don't
# use ASCII, so \015\012 means something different.  I find this all
# really annoying.
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