 block scope objects ,, 23.7 ,, file scope objects ,, 4.4
 macro definitions ,, 19.3 ,, macro parameters ,, 4.3
 function parameters ,, 16.8 ,, enumeration constants ,, 2.1
 struct/union members ,, 9.6 ,, typedef names ,, 1.2
 function declarations ,, 8.6 ,, tag names ,, 1.0
 function definitions ,, 8.1 ,, label names ,, 0.9
