SheetName ::= QuotedSheetName | '$'? [^\]\. #$']+

[Regina Henschel]

Hi all

The rule
SheetName ::= QuotedSheetName | '$'? [^\]\. #$']+
is part of section 5.8 References, part 4 ODF

Kann someone please explain the alternative
  '$'? [^\]\. #$']+
to me?

I think, '$'? means one or no character $
and [^\] means one character but not character \
But the rest?

Kind regards,
Regina