anchor.diff:  
   
   
  -==== Adding
  +=== Adding
   
   Parameters accepted by the adding member functions are:
   
  
positive.code: 	Callbacks are given the CheckArg object, the long option name and the value if there is one.
  
  
  
  ===== Short and long
  
  ----
  int CheckArg::add(const char sopt, const std::string &lopt, const std::string &help);   // <1>
  
negative.code: Initialize internal datastructures with given parameters.
  Parameters desc and appendix are optional, appname is required.
  
  ==== C
  
  [source,c]
  ----
  