4.013 And if we delve into the essence of this imagery then we see that it is not disturbed by apparent irregularities (like the use of # and Ь in musical notation).
Because even these irregularities picture what they are meant to express; only in another way.
(Sharp and flat are what I mean to indicate here, of course.)
What matters is not how a notation or language looks, but how its signs function.
‘Pictoriality’ is suggested by Black (p. 163) for Bildhaftigkeit.