They look denser (could add two "lines" per character), but wouldn't be able to change the colors of these lines individually. Having said that, we use braille

They look denser (could add two "lines" per character), but wouldn't be able to change the colors of these lines individually. Having said that, we use braille charecters when in "Graph" mode (F2 Setup > Meters > pick a meter > press Space until it goes to [Graph]).