+ SigC::Signal1<void, InsetError *> showError;
+ /// show the external inset dialog
+ SigC::Signal1<void, InsetExternal *> showExternal;
+ /// show the contents of a file.
+ SigC::Signal1<void, string const &> showFile;
+ /// show all forked child processes
+ SigC::Signal0<void> showForks;