* places where filepositions are defined in the source
  htmlpieces.pl:
     context_help_link()         : scripts
     explain_category_link()     : scripts
     topmenu()                   : scripts
     icon()                      : images
     SubmitImage()               : images
     AddLog()                    : logs
     PrintStart()                : style.css
  each <DB_NAME>_categories.pl:
     the RESULTSCRIPT property
  texts.pl
     some scriptnames
  constants.pl
     some image locations
  categories.pl
     some scriptnames
  table_out.pl
     printbuttonrow()            : scripts
     main table loop             : scripts  
  graphout
     location of temp files $tempdir
     location of gnuplot template script $plotfile    
  index.cgi, info.cgi, docu.cgi, 
  explain_category.cgi,
  graphit.cgi, download.cgi      : scripts

* configuration takes place in start.pl
  here you can
  
  set debug mode (otherwise set automatically)
  
  set several global variables