Control the arc length for all existing and new revision cloud annotations in the project.
The Arc Length value controls the arc length for all existing and new revision cloud annotations in the project. This value sets the minimum arc length for the 2-arc segment that is used to draw the revision cloud annotation. In the following image, notice that increasing the arc length value increases the size of the arcs in the cloud shape. 
- Click View tab
Sheet Composition panel
(Sheet Issues/Revisions). - On the Sheet Issues/Revisions dialog, enter a value for Arc Length. (The units for this value are determined by the Length project units.)
- Click OK.