cgi-error:
[variable not found]+28^exits p1 
s pos=$f(p1,ex)
 1) (F)+2^exits
%cgi("DOCUMENT_ROOT")=/vol1/trocha.com/html
%cgi("GATEWAY_INTERFACE")=CGI/1.1
%cgi("HTTP_ACCEPT")=text/html,application/xhtml+xml,text/xml;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
%cgi("HTTP_ACCEPT_CHARSET")=ISO-8859-1,utf-8;q=0.7,*;q=0.7
%cgi("HTTP_ACCEPT_ENCODING")=gzip
%cgi("HTTP_ACCEPT_LANGUAGE")=en-us,en;q=0.5
%cgi("HTTP_CACHE_CONTROL")=no-cache
%cgi("HTTP_CONNECTION")=close
%cgi("HTTP_HOST")=www.trocha.com
%cgi("HTTP_PRAGMA")=no-cache
%cgi("HTTP_USER_AGENT")=CCBot/1.0 (+http://www.commoncrawl.org/bot.html)
%cgi("HTTP_X_CC_ID")=ccc02-01
%cgi("PATH")=/bin:/usr/bin:/usr/local/bin
%cgi("QUERY_STRING")=rou=exits
%cgi("REMOTE_ADDR")=38.107.191.93
%cgi("REMOTE_PORT")=21428
%cgi("REQUEST_METHOD")=GET
%cgi("REQUEST_URI")=/powxel/misc/exit-signs/exits.m
%cgi("SCRIPT_FILENAME")=/vol1/trocha.com/html/powxel/misc/exit-signs/exits.m
%cgi("SCRIPT_NAME")=/powxel/misc/exit-signs/exits.m
%cgi("SERVER_ADDR")=213.239.192.52
%cgi("SERVER_ADMIN")=axel@trocha.com
%cgi("SERVER_NAME")=www.trocha.com
%cgi("SERVER_PORT")=80
%cgi("SERVER_PROTOCOL")=HTTP/1.1
%cgi("SERVER_SIGNATURE")=
%cgi("SERVER_SOFTWARE")=Apache/1.3.34 (Debian) Free-M/mod_mumps PHP/4.4.4-9+lenny1
cnt=0
ex=north
out=Exits: 
roadmask=000000
rou=exits