Non-terminal symbol `Typing_opt`

Defining rules for nonterminal symbol Typing_opt:

`Typing_opt`
		`Typing`

Occurrences of symbol Typing_opt in body of other rules:

`Definition`		`Operator` `FunctionParameters_opt` `Typing_opt` '`=`' `Expression`
`Parameter`		`ID` `Typing_opt`
`Expression`		`UntypedExpression` `Typing_opt`

Non-terminal symbol Typing_opt