OPT_NONE OPT_INDEXES OPT_INCLUDES OPT_SYMLINKS OPT_EXECCGI OPT_UNSET OPT_INCNOEXEC OPT_SYM_OWNER OPT_MULTI OPT_ALL
These constants can be used to check the return value from Apache->request->allow_options() method.
This module is simply a stub which imports from Constants, just as if you had said use Apache::Constants ':options';.