To address the correct tracking library the Interface ID should be set.
Block unique ID for following tracking events.
Cross reference to another Tracking ID in another context.
The textfield for displaying the transfer status.
Adjust option for the block enter side in the other context.
Reserve the via block if the other side did accept the transfer.
Disable transferring by an occupied via block.
Snipped examples of possible commands:
<bk id="A-Strecke" cmd="offer" rem="Makes only sense if the block contains a locomotive."/> <bk id="A-Bahnhof" cmd="offervia" offervia="A-Strecke"/> <bk id="B-Strecke" cmd="accept"/> <bk id="B-Strecke" cmd="cancel"/> <bk id="B-Strecke" cmd="reject"/>