For anyone who's actually played adventures from TotYP you probably
realize the secret doors are just blatantly obvious on the players map.
Even with Fog of War wrapped tightly around the area and moving the "S"
(for secret) marker you're still just left with an open gap. Solution,
I've taken a close screen shot of the secret areas on my map and in an
image editor copied a wall area as deep as necessary then saved it to
upload to roll20 as a token. You can then use the alt key to adjust the
token to cover the hidden door / passageway. It may take multiple wall
tokens each specific to each hidden feature. Anyone have better ideas? In the future I'd hope to see the premium maps take this into consideration from the start.