DMNFTF — unary test is not a legal standalone FEEL expression

Grammar rule 2i shows:

i. literal | unary test | name | "(" , textual expression , ")" ;

A unary test such as "-" or "not(1,3)" can only be used as notation within a decision table condition cell and do not directly map to the semantic domain. For example, the following is not valid:

not(1)=0

Proposal: replace grammar rule 2i with

i. literal | simple positive unary test | name | "(" , textual expression , ")" ;

Note: make corresponding change in simple feel and review the mappings of "-" and "not" to ensure they map to FEEL that does have valid syntax and semantics.

change grammar rule 2i in clause 10.3.1.2