my %known_parameter = (
    p       => 'Modul',         # core parameter - modul to execute
    out     => 'OutputType',    # output type (default html)
    admin   => 'AdminForced',   # executing call only if user is admin
);

sub _create_parameter_hash {
    
    my @params = @_;
    my %hash_to_return;    
    
    for my $param (@params) {
        my $hash_index = 
              exists $known_parameter{lc $param} ? $known_parameter{lc $param}
            :                                      $param
            ;                
        
        $hash_to_return{$hash_index} = $query->url_param($param);
    }
    
    return %hash_to_return;
    
}