You must rely on the accurate behavior and reliability of associative dimensioning keypoint snaps. Situations occur when snaps must take precedence over keypoint snaps to avoid potential problems.

For these reasons, a check box is available in the Preferences dialog, Building Designer Category, to turn Associative Dimensioning Keypoint snaps on and off.

The Turn On Dimensioning Keypoints setting is located in the Keypoints for Associative Dimensioning group box.

• When on, accuracy and behavior of associative dimensioning keypoint snaps is very reliable. Keypoint snaps override snaps in this mode.

• When off, snaps override keypoint snaps. Potential problematic snap situations, particularly in the Mechanical discipline, are avoided in this mode.