4.11.2, 4.111.3, 4.11.4 - Only examples?

Delete Sections 4.11.2, 4.11.3, 4.11.4. Merge 4.11.1 into 4.11

However, the terms "Simple Named Expressions", "External Named Expressions" and "Sheet-local Named Expressions" must be preserved, since they are referenced by the small and large evaluator group definitions, for example in 8.3.4.

However, I don't think 4.11.1 adequately defines those terms. We need something like the following after the BNF:

"A NamedExpression without a Source , QuotedSheetName , or SubtableCell is a Simple Named Expression. A NamedExpression with a Source is an External Named Expression. A NamedExpression with a QuotedSheetName is a Sheet-local Named Expression."

We can then go directly into the next paragraph, as "Evaluators supporting named expressions shall support Simple Named Expression..."

An alternative would be to define 3 different BNF's, one corresponding to each named expression type and then or them altogether to define "named expression"

Changed EBNF to

NamedExpression ::= SimpleNamedExpression |
SheetLocalNamedExpression | ExternalNamedExpression

SimpleNamedExpression ::= Identifier |
'$$' (Identifier | SingleQuoted)

SheetLocalNamedExpression ::=
QuotedSheetName '.' SimpleNamedExpression

ExternalNamedExpression ::=
Source '#' (SimpleNamedExpression | SheetLocalNamedExpression)

Removed 4.11.1 General merging text to 4.11 Named Expressions
Concatenated test cases of section 4.11.2, 4.11.3 and 4.11.4
Merged test cases into 4.11