CURRENT_BUFFER
     Returns the buffer in which you are currently positioned.
  Syntax
     buffer := CURRENT_BUFFER
  Examples
     1.  my_cur_buf := CURRENT_BUFFER;
         Stores in the variable MY_CUR_BUF a pointer to the current buffer.
     2.  SHOW (CURRENT_BUFFER);
         Returns the current buffer as the parameter for the SHOW built-in.
         (See help on SHOW.)
  Related topics
     CREATE_BUFFER   CURRENT_WINDOW