Process form variables for both POST and GET methods.
# Below Will process all query string variables.

if ($ENV{'REQUEST_METHOD'} eq "GET" || $ENV{'QUERY_STRING'} ne "")
{
 @pairs = split(/\&/, $ENV{'QUERY_STRING'});
 foreach $pair (@pairs)
 {
  ($name, $value) = split(/=/, $pair); # Split into name and value.
  $$name = $value; # Assign value to scalar matching name.
  $$name =~ s/%(..)/chr(hex($1))/ge; # Decode encoded stuff.
  $$name =~ s/\+/ /g; # substitute +'s for spaces.
 }
}
#Home page (and default opening topic): TEMPO 5 Help #Topics-01-1.html
#Home would be returned in the querystring as value for topic..