XS_MARK_LEADER_LINE_LENGTH_FOR_PERPENDICULAR
Category in Advanced options dialog: Marking - general
Use this advanced option to control the length of the perpendicular leader lines of rebar group marks. The default value is 0.
When the value is 0 (or a negative value), the leader line length is dynamic, and the leader line stays connected to the rebar also when the mark is dragged further away from the rebar. If you use a positive value, the leader line length becomes static, and it is always the given value even when you drag the mark away from the rebar.
This advanced option is role specific. When the type SYSTEM(ROLE) is in use, the default value is used. When the type MODEL(ROLE) or DRAWING(ROLE) is in use, you can change the value, which is then the same for all users in the current model.