compile_ggconf          the core function of ggconf
define_ggconf_constants
                        define constant values used in ggconf
exec_ggconf             execute raw ggconf commands
find_first_index        define constant values used in ggconf
get_all_theme_aes       get all theme element names
get_analogue            return resulted strings of approximate string
                        match
get_element_tree_clone
                        get element tree clone
get_theme_elem_name_conf
                        get all theme element configurations
ggconf_dbgmsg           display ggconf debug message
remove_element_whatever
                        remove element_* function calls
replace_marks           replace some marks for later ggconf parsing
show_fixit_diagnostics
                        Display useful debugging info for users
theme2                  an enhanced version of ggplot2::theme()
