crosslink items
-
in every challenge, list and link to the stations using it -
in every station, list and link to all tracks using it -
in every track, list and link to all playgroups using it -
in every playgroup, link to the track -
in every station, list and link to all playgroups currently searching for it -
in every challenge, list and link all playgroups currently looking for a solution (and maybe those who solved it but didn't find the next station yet, visibly distinguished)