True if the first segment of the callout line (the segment attached to the text callout box) is scaled automatically whenever the callout is moved. False if the first segment of the callout retains the fixed length specified by the Length property whenever the callout is moved. Applies only to callouts whose lines consist of more than one segment (types msoCalloutThree and msoCalloutFour). Read-only Long.
Remarks
This property is read-only. Use the AutomaticLength method to set this property to True, and use the CustomLength method to set this property to False.