my %langTags=(
    perl => {
        HEAD => [
            '#!/usr/bin/perl',
        ],
        DEFAULT => [
            'use strict;',
            'use warnings;',
        ],
        cgi => [
            'use CGI::Carp qw( fatalsToBrowser );',
            'use CGI qw( -nosticky -compile -no_debug -private_tempfiles -newstyle_urls );',
        ],
        moose => [
            'use Moose;'
        ],
        # ...
    },
    bash => {
        HEAD => [
            '#!/bin/bash',
        ],
        cgi => [
            'source /usr/local/lib/bash/bashcgi-lib.bash',
        ],
        csv => [
            'source /usr/local/lib/bash/csv-lib.bash',
        ],
        ourlibs => [
            'source /usr/local/lib/bash/foo-lib.bash',
            'source /usr/local/lib/bash/bar-lib.bash',
        ],
        # ...
    },
    c => {
        DEFAULT => [
            '#include <stdio.h>',
            '#include <stdlib.h>',
            '#include <string.h>',
        ],
        # ...
    },
    # ...
);