The page
I wrote this in a lecture with an Apple Pencil in GoodNotes. It's one of 675 pages that went into the font.
Every stroke
GoodNotes doesn't keep a picture of the page. It keeps every stroke as the exact path the pen took, in order. This page has 496 of them, each coloured differently here.
Words
Strokes that sit close together on a line are grouped into words. There are 112 on this page.
Letters
Inside each word, strokes that overlap are grouped into letters. An AI model read thousands of words like these, and each letter it read was matched back to its strokes.
The keepers
Most letters are fine but ordinary. From this page, five were picked to be in the font because they look the most like how I usually write them, while still looking different from the others.
The font
Every letter gets five versions from five different pages. The one from this page sits next to four others, and they take turns as you type.