Almost all of the wide range of abilites found in the tidy extension can be controlled by setting the values of tidy configuration options. These options can be set by: at run-time using %tidy_setopt()% / %tidy_getopt()% loading a tidy configuration file using %tidy_load_config()% having a default configuration file loaded by setting the %tidy.deafult_config% PHP configuration directive. *NOTE:* You can access a list of all of the tidy configuration options in the output of %phpinfo()%