TOLER (tolerancing) allows you to change the tolerance 
value and/or tolerance type assigned to an existing 
decimal dimension. Ordinate dimensions and manually-
entered dimensions are not accepted for this option.

Indicate the type of tolerancing by choosing from the
following options:

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

TYPE   - to allow you to change the type of tolerancing 
         used in a selected dimension.
