Piled CGI Remarks
The most obvious reason for this error message is the lacking of a valid
HTTP header like the following one: Content-type: text/html
Please note the empty line
which denotes the end of the header.
Specification
Written by Stefan Hornburg <racke@gundel.han.de>
Translated from cgi.tcl by Info Prism's sgml2html v0.0.6
Last modified 10 December 1998