gnu.x11.test.DBE (0.1) - test double buffer extension. Copyright (C) Stephen Tse . Under GNU Public License. http://escher.sourceforge.net/. Usage: java gnu.x11.test.DBE [OPTION]... Possible options: --noisy-option-parser [boolean] show working of option parsing (false) --help [flag] display this help screen and exit (absent) --display [display name] X server to connect to (:0.0) --send-mode [enum: async, sync, round-trip] request sending mode (async) To quit, press 'q', 'Q', ESCAPE, or any button.