gchart_available_areas
                        Get available areas
gchart_cache_dir        Verify cache directory
gchart_countries        Extracts the list of available countries from
                        the Google Charts documentation
gchart_generate_countries
                        Generate Google Charts spatial data for all
                        countries
gchart_generate_us_areas
                        Generate Google Charts spatial data for US
                        areas
gchart_get_cache_path   Get the cache path
gchart_get_countries    Get Google Charts data for countries
gchart_get_us_areas     Get Google Charts data for US areas
gchart_process_areas    Process Google Charts data for US areas
gchart_set_cache        Set up a cache directory
