notate
Notate is a verb meaning to write or convey information using a system of signs, symbols, or marks, i.e., to put something into notation. The term derives from Late Latin notare "to mark," from notus "known," and has been in English since the medieval period.
Usage spans disciplines. In music, to notate a melody or rhythm means to write it in musical
Important distinction: notate is about encoding information in a formal notation, whereas annotate means to add