@verbatim
FONTSET ::=
- PER-SCRIPT +
+ PER-SCRIPT * PER-CHARSET * FALLBACK *
PER-SCRIPT ::=
'(' SCRIPT PER-LANGUAGE + ')'
PER-LANGUAGE ::=
'(' LANGUAGE FONT-SPEC-ELEMENT + ')'
+PER-CHARSET ::=
+ '(' CHARSET FONT-SPEC-ELEMENT + ')'
+
+FALLBACK ::=
+ FONT-SPEC-ELEMENT
+
FONT-SPEC-ELEMENT ::=
'(' FONT-SPEC [ FLT-NAME ] ')'