-showVersionMode, showNumVersionMode, showSupportedLanguagesMode :: Mode
-showVersionMode = mkPreStartupMode ShowVersion
-showNumVersionMode = mkPreStartupMode ShowNumVersion
-showSupportedLanguagesMode = mkPreStartupMode ShowSupportedLanguages
+showVersionMode, showNumVersionMode, showSupportedExtensionsMode :: Mode
+showVersionMode = mkPreStartupMode ShowVersion
+showNumVersionMode = mkPreStartupMode ShowNumVersion
+showSupportedExtensionsMode = mkPreStartupMode ShowSupportedExtensions