[Blindmath] Reading and Writing Math: LEAN versus MathSpeak

[Susan Jolly]

Hi John G.,

It would be helpful for my (and perhaps others') understanding of LEAN if 
you could explain the differences between your new LEAN notation and 
MathSpeak.  MathSpeak, as I'm sure you know, is a spoken form of Nemeth 
braille that is similar to the "verbal math" option in MegaDots.  (John 
Boyer knows more about the latter than I do so it would be great if he wants 
to add some additional information.)

MathSpeak was orginally proposed by Dr. Nemeth but over the last few years 
ghBraille has undertaken a large research effort to test and update 
MathSpeak as necessary to ensure that the latest version of MathSpeak is 
comprehensive, easy to learn and understand, and avoids ambiguity.

Sincerely,
Susan Jolly