Sketchnote Text, Italic and Bold were built from hundreds of
hand-drawn glyphs, and variations on glyphs. These added
characters allowed Delve to create Contextual Alternates —
multiple variations on each character which help recreate
variations in handwriting and can be accessed with tools that
support this OpenType feature, like InDesign.
One of the best handwriting fonts I’ve ever seen.
via Daring Fireball http://rohdesign.com/sketchnote-typeface