> To save time, I would suggest adopting the Patent Office rules on > Perpetual Motion. People advocating for a change to facilitate figures > (or to allow complicated math, such as tensor analysis) should have an > existence proof, i.e., a document that requires the change to be > published. (A document that left the IETF to be published elsewhere > for this reason would also do.) Marshall If I remember correctly, draft-ash-alt-formats gave such examples. G.805 diagrams were needed for some of the PWE and MPLS work, but could not be put in the desired format. I personally started writing up a description of a packet loss concealment technique, but had to give up due to the formulas not being transcribable (I had no problem submitting a patent application instead). In TICTOC we are not even considering attempting any work that needs math, but rather leave it to other SDOs. It is considered a limitation of the system. Y(J)S _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf