Hello, Jean.
I'm working hardly to improve calculation engine of SMath Studio. And as a result one can see new
nightly release.
Because of serious changes done to SMath Studio since latest stable version I have to ensure application still able to open worksheets created before and that is where I want to thank you for all the examples you've uploaded to the forum. Thank you!
I have downloaded all examples you shared with community and testing application now (I have thousand of tests created locally, but your contribution is also very important). Currently all my local tests passed OK, but I found many bugs during verification of your shared worksheets.
I want to ask you about one interesting issue I have found:

Error was found and now fixed in nightly build:

Please, could you comment about the reasons of rfile/wfile used?
Thank you and best regards!