While most flows that I create are quite self-explaining, I have come to a point where it would be nice to add textual comments for more explanation.
This is especially true after a few months, half-year or so when you want to change some small things. For complex flows (> 20 cards + several or options) it takes quite some study to find the same brain waves as before.
Is there any way to add comments that I overlooked besides using an external document to hold flow explanations?
Yes, this is the correct form.
Nobody can tell you if it’ll have any effect. The more this feature is requested at Athom, the higher it will be prioritized (hopefully).