Answer:

notation

Answer	Crossword Clue
NOTATION	Marginal reference
NOTATION	Marginal jotting
NOTATION	System of symbols, as in music

NOTATION	Margin jotting
NOTATION	System of signs.
NOTATION	Memorandum.
NOTATION	Musical signs.
NOTATION	System of signs or symbols
NOTATION	Idea
NOTATION	Tablature is a type
NOTATION	"Stet," for example

NOTATION	Marginal marking
NOTATION	System of symbols

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.