The online documentation available through the program's Help menu.
History
Debian 7 (Wheezy) to Debian 5.0 (Lenny): the text shown here
Debian 4.0 (Etch) to Debian 3.1 (Sarge)
--class until Debian 4.0 (Etch);
--disable-sound until Debian 4.0 (Etch);
--display until Debian 4.0 (Etch);
--enable-sound until Debian 4.0 (Etch);
--espeaker until Debian 4.0 (Etch);
--file until Debian 4.0 (Etch);
--g-fatal-warnings until Debian 4.0 (Etch);
--gdk-debug until Debian 4.0 (Etch);
--gdk-no-debug until Debian 4.0 (Etch);
--geometry until Debian 4.0 (Etch);
--gtk-debug until Debian 4.0 (Etch);
--gtk-module until Debian 4.0 (Etch);
--gtk-no-debug until Debian 4.0 (Etch);
--help until Debian 4.0 (Etch);
--load-modules until Debian 4.0 (Etch);
--name until Debian 4.0 (Etch);
--oaf-activate-iid until Debian 4.0 (Etch);
--oaf-ior-fd until Debian 4.0 (Etch);
--oaf-private until Debian 4.0 (Etch);
--play until Debian 4.0 (Etch);
--record until Debian 4.0 (Etch);
--sm-client-id until Debian 4.0 (Etch);
--sm-config-prefix until Debian 4.0 (Etch);
--sm-disable until Debian 4.0 (Etch);
--sync until Debian 4.0 (Etch);
--usage until Debian 4.0 (Etch);
-? until Debian 4.0 (Etch);
-f until Debian 4.0 (Etch);
-p until Debian 4.0 (Etch);
-r until Debian 4.0 (Etch).