push_config_state (3) - Linux Man Pages
push_config_state: Pushes the current configuration state. Allegro game programming library.
push_config_state - Pushes the current configuration state. Allegro game programming library.
Pushes the current configuration state (filename, variable values, etc).
onto an internal stack, allowing you to select some other config source
and later restore the current settings by calling pop_config_state().
This function is mostly intended for internal use by other library
functions, for example when you specify a config filename to the
save_joystick_data() function, it pushes the config state before
switching to the file you specified.