Press Enter to select the object to dimension, or specify the first and second extension line origins.
Before specifying the dimension line location, you can edit the text or change the text angle. Editing within or overwriting the brackets (<>) changes or removes the dimension value calculated by the program. Adding text before or after the brackets appends text before or after the dimension value.
To edit the text using multiline text, enter m (multiline text). In the In-place Text Editor, revise the text. Click OK.
To edit the text using single-line text, enter t (Text). Revise the text at the Command prompt and press Enter.
To rotate the text, enter a (Angle). Then enter the text angle.