rem: a_rtManager->toggleIgnored(l);
add: bool revert = !a_rtManager->toggleIgnored(l);
context: void KNMainWindow::slotArtToggleIgnored(){  kdDebug(5003) << "KNMainWindow::slotArtToggleIgnored()" << endl;  if( !g_rpManager->currentGroup() )    return;  KNRemoteArticle::List l;  getSelectedThreads(l);  a_rtManager->toggleIgnored(l);  a_rtManager->rescoreArticles(l);  if (h_drView->currentItem()) {    if (c_fgManager->readNewsNavigation()->ignoreThreadCloseThread())      closeCurrentThread();    if (c_fgManager->readNewsNavigation()->ignoreThreadGoNext())      slotNavNextUnreadThread();  }}