A search operation may be initiated either by the application (see txc'srchkey) or by the user by clicking on the search icon (binoculars) on the toolbar (see TXF_TOOLBAR and txc'toolbarmask) or by hitting F5 (assuming that txc'fmapctl has been set to forward F5 to the control. The operator can continue searching for additional matches by hitting Ctrl+F (search forwards) or Ctrl+Shift+F (search backwards)..

Currently replace operations can only be initiated by the user, by hitting f6 (again, assuming that that txc'fmapctl has been set to forward F6 to the control).