Edit control is to edit the value of numerical or text type data in panels of the property group.
In both cases, values can be edited by typing in the corresponding Value field. In case of numerical type data, edit control also encompasses slider control as indicated by the left-right arrows on the right side of the value field.
Note: Changing numerical values with slider control will add an undo step for each value that has been passed. This means that using slider control will quickly fill up the maximum amount of undo steps.