Category in Advanced options dialog box: Marking - general

Use this advanced option to control the length of the perpendicular leader lines of rebar group marks. The default value is 0.

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.