int exportgroup = addPreference( tr( "PREF_GROUP_EXPORT" ), genTab );
setPreferenceProperty( exportgroup, "columns", 2 );
addPreference( tr( "PREF_AUTO_GROUPS" ), exportgroup, LightApp_Preferences::Bool, "SMESH", "auto_groups" );
int exportgroup = addPreference( tr( "PREF_GROUP_EXPORT" ), genTab );
setPreferenceProperty( exportgroup, "columns", 2 );
addPreference( tr( "PREF_AUTO_GROUPS" ), exportgroup, LightApp_Preferences::Bool, "SMESH", "auto_groups" );