VALUES allows you to change the tolerance value(s) on a
dimension that already has a tolerance assigned to it.

Indicate the type of tolerance value to change by choosing
from the following options:

POS TOL (positive tolerancing) - to key-in a new positive
        tolerance for the selected dimension. This value
        must be greater than or equal to zero (0).

NEG TOL (negative tolerancing) - to key-in a new negative
        tolerance for the selected dimension. This value
        must be less than or equal to zero (0).

BOTH  - to key-in new positive and negative tolerances.

Select the desired dimension(s) for tolerance value 
changes using a Selection Menu option.
