This is long overdue, and it was very silly not to have this available. But now you can capture the board id of boards linked in a particular direction with EdgeN, EdgeS, EdgeE, and EdgeW.

10/18/2023: Weave 3.2d

Additions:

* Added EDGEN, EDGES, EDGEE and EDGEW read-only counters to grab the Board IDs for linked boards. (unlinked boards have an ID of 0.)