Dia and print.

Hello,
I would like to start enlarging slides on reversible paper. Can anyone share a recipe for b&w developer. I understand that the rest is the ra4 process?
I asked such a question to a colleague from China, who on FB publishes just such enlargements but in one word he wrote no. Is this some kind of secret knowledge that people do not want to share?

Regards
Adam

Reversal RA-4 experiment thread.

Thank You!