parts:
    "r": recording "data/maps/wilderness/recs/roller000.fus"
    "r": "data/maps/demo/vert.fus"

collmap:
    ;;
    ;;       ? - +    [r]
    ;;      /*\*/*\
    ;; .   + -(+)- +
    ;;      \*/*\*/
    ;;       + - +
    ;;