I already read that page prior to contacting you. The information is incorrect. Pressing shift does not bring up the long vowel on the keyman keyboard. I invite you to try it.
Instead, I found that pressing u prior to the vowel creates the double vowel. However, this is not indicated in any instruction manual. I discovered it by pressing every key on the keyboard in a blind attempt.
Thank you for the heads up. This keyboard package is interesting. The Shift key functionality doesn’t work at all on my MAC. If we haven’t missed anything critical, both shift and unshift versions of each vowel key produce the same output instead of what’s expected, i.e.
I notice that this keyboard layout does not match the QWERTY layout. The documentation here do need a little bit of a brush up.
The document above keeps mentioning “Transitional Syllabic Chart” which most likely is this one Ojibwe Syllabarium – Languagegeek. Typing what’s on the left most column and then what’s on the top row does output the expected characters, i.e. w+e outputs ᐌ, w+i outputs ᐎ, w+o outputs ᐒ and w+a outputs ᐗ, etc…
Note to the keyboard author, what’s not working is the double presses on the vowel keys does not output the expected character, i.e. i+i outputs ᐃᐃ instead of the exptected character.