Answer:

SEENOTE

Answer	Crossword Clue
SEENOTE	Cross-reference words
SEENOTE	Cross-referencing words
SEENOTE	Parenthesized words leading to a few more words

SEENOTE	Direction to look at the back of the book
SEENOTE	What an asterisk often means
SEENOTE	Reader's direction
SEENOTE	Often-bracketed direction
SEENOTE	[more info below]
SEENOTE	What an asterisk might suggest
SEENOTE	What an asterisk may mean
SEENOTE	Comment advising you to set your sights a little lower?

SEENOTE	Cross-reference for further information
SEENOTE	Directive for additional information