al_add_config_comment
void al_add_config_comment(ALLEGRO_CONFIG *config,
const char *section, const char *comment)
Add a comment in a section of a configuration. If the section doesn't yet exist, it will be created. The section can be NULL or "" for the global section.
The comment may or may not begin with a hash character. Any newlines in the comment string will be replaced by space characters.
See also: al_add_config_section