Hi Stéphane,
hello,
I stumbled upon this:
1) open an image with Cog
2) open a Worspace, evaluate
0.0 closeTo: 0
-> true (so far, so good)
3) now evaluate
(1.0 closeTo: 1) and: [0.0 closeTo: 0]
-> false !
4) evaluate again
0.0 closeTo: 0
-> false !
5) save the image and quit.
6) reopen the image, start again at 2...
???
Stef