While dimensioning an object, you can add notes to the dimension line carrying any information you need to appear along with the dimension line. For example, you can add:
The notes can be added either during the dimensioning of the object or later, by selecting the dimension. You can enter whatever text you need and use expressions — see Step 2 in the procedure below.
Unless set otherwise, the notes are displayed according to the globally defined format.
To add notes to dimension lines
While you are positioning the dimension line, a contextual edit bar appears above the graphical area.
NOTE: You can type the text either in front or after the expression. The text then appears over the dimension line.