 
                            ...
| [ISO/IEC 9899:2011] | Subclause 6.7.6.3, "Function Declarators (including Prototypes)" Subclause 6.11.6, "Function Declarators" | 
| [TIGCC, void usage] | Manual, "C Language Keywords": void | 
...
 
                            ...
| [ISO/IEC 9899:2011] | Subclause 6.7.6.3, "Function Declarators (including Prototypes)" Subclause 6.11.6, "Function Declarators" | 
| [TIGCC, void usage] | Manual, "C Language Keywords": void | 
...