help CGI script - access help pages

Allows access to PIE help files bypassing the authentication normally required

Input: CGI data
Output: HTML to stdout, writes to logfile
None-PIE modules used: CGI, DBI

PDL

Read config file
Parse CGI query
If topic defined
    Connect to PIE database
    Get information about topic from help table
    Unless help found
    	Call onerror routine - this exits
    Open log file
    Create log entry
    Close log file
    Get HTML from itemconfig table
    Substitute for variables in pseudo-HTML
    Print HTML
    Disconnect from PIE database
Else
    Call onerror routine - this exits
Exit

File also contains copy of ParseXML and ReadConfig subroutines (see UIG.pdl),
and onerror subroutine (see shared.pdl)