Infinity-Wtl-4 names a function, with lambda list (D U R):
Walk the Line indirect refresher from observer
Lisp WTL-4 = JSON wtl4
{ u: "TOOT-NAME", course: { COURSE }, facing: RADIANS }
Facing can be provided as per TOOTSVILLE INTERPRET-FACING.
WRITEME
Defined in file src/infinity/new-commands-20.lisp.