Salut
j'ai pas mal galéré avant de retrouver la manip' à réaliser... : je la replace ici, au cas où ça intéresserait quelqu'un
"Vasl maps are .gifs within .zips. Take an existing board, e.g. bd01. Rename it bd01.zip. Extract its contents. You should now have bd01.gif, among other files.
To create your own VASL map, reverse the process. Create a .gif. Name it bdFoo.gif. Zip it in bdFoo.zip. Rename bdFoo.zip -> bdFoo. The last time I did this--some years ago--that was all that was necessary to prove the basic idea.
As you probably noted there were a whole bunch of files besides bd1.gif. The file BoardMetadata.xml allows VASL to scale your map appropriately, among other things. When I last made a map there wasn't too much documentation on the metadata, but perhaps that has changed."
... et ça marche! (du moins sur ma version qui ne doit pas être la dernière)