Posting here an excerpt for a BackTo20/20 video on patching, since this particular approach to patching is a somewhat common mistake: https://www.youtube.com/watch?v=oa_78i2C37c
How can I see this video?
When I clicked on it it said the video was private/unavailable.
Ah yea some advanced pro topics are now available with the courses exclusively.
Original post was from 2018. And still today all basic things needed, always free. Also though have to pay the countless endmyopia bills somehow - so some stuff, optionally available as thanks to supporters.