#TODO: help_string & usage_string: gui/about.cpp gui/browser.cpp gui/chooser.cpp gui/error.cpp gui/GuiManager.cpp gui/KeysDialog.cpp gui/launcher.cpp gui/massadd.cpp gui/options.cpp gui/saveload.cpp gui/themebrowser.cpp gui/ThemeEngine.cpp base/main.cpp common/error.cpp common/util.cpp engines/dialogs.cpp engines/scumm/dialogs.cpp engines/mohawk/dialogs.cpp engines/mohawk/myst.cpp engines/mohawk/riven.cpp engines/cruise/menu.cpp sound/fmopl.cpp sound/musicplugin.cpp sound/null.h sound/null.cpp sound/mods/paula.cpp sound/softsynth/adlib.cpp sound/softsynth/appleiigs.cpp sound/softsynth/sid.cpp sound/softsynth/mt32.cpp sound/softsynth/pcspk.cpp sound/softsynth/ym2612.cpp backends/keymapper/remap-dialog.cpp backends/midi/windows.cpp backends/platform/ds/arm9/source/dsoptions.cpp backends/platform/iphone/osys_events.cpp backends/platform/sdl/graphics.cpp backends/platform/symbian/src/SymbianActions.cpp backends/platform/symbian/src/SymbianOS.cpp backends/platform/wii/options.cpp backends/platform/wince/CEActionsPocket.cpp backends/platform/wince/CEActionsSmartphone.cpp backends/platform/wince/CELauncherDialog.cpp backends/platform/wince/wince-sdl.cpp