ret.push_back(ParamDesc("time_offset")
.set_local_name(_("Time Offset"))
+ .set_description(_("Time Offset to apply to the context"))
);
ret.push_back(ParamDesc("children_lock")
.set_local_name(_("Children Lock"))
+ .set_description(_("When checked prevents to select the children using the mouse click"))
);
ret.push_back(ParamDesc("focus")