You can modify all components of the existing dimension objects in a drawing either individually or by using dimension styles.
You can modify existing dimensions by applying a different dimension style. If you make changes to a dimension style, you can choose whether to update the dimensions associated with that dimension style.
With dimension style overrides, you can temporarily change a dimensioning system variable without changing the current dimension style.
Dimensions can be modified to include more information than just the values of the dimension. Dimensions can also be modified visually by using breaks and by adjusting the spacing between them.
Once you've created a dimension, you can change the location and orientation of the existing dimension text or replace it with new text.
Grip editing is the quickest and easiest way to modify the location of dimension elements. How you edit dimensions depends whether the dimension is associative.
You may need to change the associativity of dimensions in several circumstances including adding associativity to dimensions created in previous releases.