text: 
  
  // C11 7.9 Alternative Spellings
  
  #ifndef __ISO646_H
  #define __ISO646_H
  
  #define and &&
  #define and_eq &=
  #define bitand &
  #define bitor |
  #define compl ~
  #define not !
  #define not_eq !=
  #define or ||
  #define or_eq |=
  #define xor ^
  #define xor_eq ^=
  
  #endif
  