@beardalaxy to be fair i don't really grasp the concept of blind dyslexia. they claim its why they typo a lot (though they mostly use speech to text which results in -other- hilarity.)
i get that dyslexia is basically overdeveloped grid cells eating in to the space for other modules. they have trouble with small dimensional symbols because the brain is trying to encode them spatially (like ADHD has failed to prune the neural trees so they are overconnected and not properly being context boxed) but i don't know if this is just solved by a good auto complete (which i like flx matching anyway)
2) apparently those don't work for any but the most basic cases