As soon as a construction step has been carried out in the Sketcher (for example, adding a line), the corresponding input fields are displayed in the Tool docking window (here with the current label Edit element ).

You can also manually select an element in the sketch history [Sketch history] or in the Sketcher at any time to call up the dialog and change parameters if necessary.

Clicking on the Discard changes button button, changes are not taken into account.

If the Apply changes automatically [Automatically apply changes] checkbox is activated, every valid change is saved automatically (but can still be undone [Delete step [Delete step] or Undo ]).

If the checkbox is not activated, an OK button is displayed and changes are only applied after the button is pressed.