DIM REP allows you to change the existing linear, radial,
diametrical, and ordinate dimensions representations to
decimal, feet, inches, or fractions. For fractional or
feet/inches represented, the value is rounded up to the
nearest fractional unit; half units are rounded down.
Angular dimensions can be changed to degrees or degrees, 
minutes, and seconds.

Change the decimal representation by choosing from the
following options:

DECIMAL   - to change the number of digits to the right of
            the decimal point in an existing dimension.

FRACTIN   - to change the current dimension to a 
            fractional value.

FT / IN   - to change the current dimension value to feet 
            and inches mode.

DEGREES   - to set an angular dimension's text
            representations to degrees.

DEG / MIN - to set an angular dimension's text
            representation to degrees minutes, and 
            seconds.
