I have been working on a character set (including accented characters and a few dozen MCCs) that will work with a dot pattern to help with memorization. I seem to be mastering it and it feels right for typical English text strings, digrams, trigrams, etc. My dexterity is not good so I cannot report speed yet. Just another approach ... more to come..twiddler_cfg_digid-20180514.pdf (94.7 KB)
The chord notation does look easier to scan visually using "_" instead of "O" and "m" instead of "M".Nice idea!!
I started by using a degree symbol for "o" and then realized, how ironic, it is the one character I will never map to a chord. All the letters and common punctuation are in single key column.