I for debugging into farther points of the game, use strings like, e.g.
n.u.w.w.n.take this.s.e.e.s.take that.put this in that
n.w.turn on that.s.s.s.d
n.n.put that on gizmo.turn on that.u
as one can easily figure, line 1 solve a puzzle about this and that, and lines 2 and 3 solve two different puzzle needing the solve of puzzle 1
Astute people will note that as walkthru, is in a format ready to be pasted into the parser’s command line… 
if your ßtester must check a specific puzzle, s/he need to cut/paste the required command line, e.g line 1 and 2, or line 2 and 3
I’m actually working into two distinct part of one of my major work, and indeed I kept a “main” branch (akin to line 1) and “trunks” toward the work aerea (akin to line 2 and 3)
oh, I’m sure that really old timers will smile, because, well, is how mines (the industrial type) are actually digged, because, well, dungeons and underground are basically mines…
Best regards from Italy,
dott. Piergiorgio.