Noto Sans Duployan is a design for the Duployan shorthand script.
Noto Sans Duployan contains 10,255 glyphs, 11 OpenType features, and supports 210 characters from 5 Unicode blocks: Duployan, Basic Latin, Combining Diacritical Marks, General Punctuation, Latin-1 Supplement.
Duployan shorthand (Sloan-Duployan shorthand, Duployan stenography) is an shorthand alphabet, written left-to-right. Geometric stenography script created in 1860 by Father Émile Duployé for writing French, later expanded and adapted for writing many other languages. Heavily cursive (connected), allows words to be written in a single stroke. Praised for simplicity and speed of writing. Needs software support for complex text layout (shaping). Read more on ScriptSource, Unicode, Wikipedia, Wiktionary, r12a.