anchor.diff:  %%            {ok, FieldInfo} |
   %%            {error, Reason}
   %%
  -%%            LogFun  = undefined | function() with arity 3
  +%%            LogFun  = undefined | mysql_log_fun()
   %%            RecvPid = pid() "mysql_recv process"
   %%
   %%            FieldInfo = [term()]
  
positive.code: %%            {error, Reason}
  %%
  %%            N       = integer() "number of rows to get"
  %%            LogFun  = undefined | function() with arity 3
  %%            RecvPid = pid() "mysql_recv process"
  %%
  %%            Rows = [[string()]]
  
negative.code: %%            RecvPid  = pid() "mysql_recv process"
  %%            User     = string()
  %%            Password = string()
  %%            LogFun   = undefined | mysql_log_fun()
  %%
  %%            Reason = string()
  %%
  