let images_dir = runtime_base_dir ^ "/icons"
let gtkrc_file = runtime_base_dir ^ "/matita.gtkrc"
let lang_file = runtime_base_dir ^ "/matita.lang"
let images_dir = runtime_base_dir ^ "/icons"
let gtkrc_file = runtime_base_dir ^ "/matita.gtkrc"
let lang_file = runtime_base_dir ^ "/matita.lang"