Architectural Specifications

ARCH-SPEC-DEFN  ::=   arch-spec-defn SPEC-NAME ARCH-SPEC
ARCH-SPEC       ::=   arch-spec UNIT-DECL+ RESULT-UNIT

UNIT-DECL       ::=   unit-decl UNIT-NAME UNIT-SPEC
UNIT-NAME       ::=   SIMPLE-ID

UNIT-SPEC-DEFN  ::=   unit-spec-defn SPEC-NAME UNIT-SPEC
UNIT-SPEC       ::=   SPEC-NAME | UNIT-TYPE
UNIT-TYPE       ::=   unit-type SPEC* SPEC

RESULT-UNIT     ::=   result-unit UNIT-DECL* UNIT-TERM
UNIT-TERM       ::=   UNIT-APPL | UNIT-REDUCT
UNIT-APPL       ::=   unit-appl UNIT-NAME UNIT-TERM*
UNIT-REDUCT     ::=   unit-reduct SIG-MORPH UNIT-TERM