AutoCAD LT supports a mixture of user-supplied text, prefixes and suffixes supplied by the dimension style, and AutoCAD LT-generated measurements. For example, you could add a diameter symbol as a prefix to a measurement or add the word form for a unit, such as mm, as a suffix. Text in this context refers to all dimension text, prefixes and suffixes, primary and alternate units, and lateral tolerances. Geometric tolerances are controlled independently. See Adding Geometric Tolerances.
Dimension text is treated as a single string of text, which you create and format using your text editor.
Controlling the Display of Primary Units
Controlling the Display of Alternate Units
Supplying User Text to Dimensions
Suppressing Zeros in Primary and Alternate Units
Adding Lateral Tolerances
Formatting Lateral Tolerances
Controlling the Appearance of Dimension Text
Rounding Off Dimension Values