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11.7.3 Declarations

Declarations introduce new entities that denote types, variables, attributes, and packages. Some declarations can only appear immediately within a project declaration. Others can appear within a project or within a package.

     declarative_item ::= simple_declarative_item
       | typed_string_declaration
       | package_declaration
     simple_declarative_item ::= variable_declaration
       | typed_variable_declaration
       | attribute_declaration
       | case_construction
       | empty_declaration
     empty_declaration ::= null ;

An empty declaration is allowed anywhere a declaration is allowed. It has no effect.