While applying as many lines as possible to the still loose foremast, I noticed that the temporarily secured reefing lines became loose. That's why they are now permanently tied:
View attachment 356518
Then I thought, I can do that in the way I used on the windmill to 'tie' the 3 'reef lines' (zwichtlijnen) of the sail to the fencing (hekwerk) of the wings (wieken):
View attachment 356519
You pass the loop A at position B from left to right between the rope and the wood. Then pull the loop down by pulling A and C at the same time to the corner of the horizontal and vertical batten. The tension on the line holds the loop there.
If the line has to be loosened (quickly), you only have to pull at the end C and the 'knot'/loop will loosen automatically.
On my model, I threaded both ends between the sail and the loop around the sail and pulled down to the side of the boom. You tuck away loose longer ends so neatly.
PS: The knots of course fixed with a tip of diluted wood glue.
Regards, Peter