Tracks associated with structures in Lineardraft can be separated into Main Tracks and Additional Tracks.
Main tracks are those that are associated with the structure when you place it by choosing the left and right rails.
Additional tracks are those that you add later in your design that would, in many cases, be placed on the opposite side or outside of the structure.
More info: For full instructions on how to add an additional track or reassociate the main tracks of a structure, please see the linked articles.
