They will indeed disappear after the completion of an operation.
There is no way I know of to delay this.
If you need a more permanent solution then you will have to use lines and delete them when not needed or better still put them in a layer you can simply turn off.
Then turn the layer back on if you need them again.
You can set up a few lines at common angles that you can move and duplicate as needed then just turn the layer off.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
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