
In some dialog boxes, a Digitize button appears next to an input box.
For example, the Rectangle dialog box contains both input boxes and Digitize buttons.

If you click Digitize beside any of the input boxes, the dialog box temporarily disappears, and command line messages prompt you to select points within the drawing.
After you click the required point(s), the dialog box returns, and the points you selected appear as values in the input boxes.
When all input boxes contain values, click the Draw Rectangle button. The rectangle appears in the drawing