octave: Killing and Yanking

 
 2.4.2 Killing and Yanking
 -------------------------
 
 “Killing” text means to delete the text from the line, but to save it
 away for later use, usually by “yanking” it back into the line.  If the
 description for a command says that it ‘kills’ text, then you can be
 sure that you can get the text back in a different (or the same) place
 later.
 
    Here is the list of commands for killing text.
 
 ‘C-k’
      Kill the text from the current cursor position to the end of the
      line.
 
 ‘M-d’
      Kill from the cursor to the end of the current word, or if between
      words, to the end of the next word.
 
 ‘M-<DEL>’
      Kill from the cursor to the start of the previous word, or if
      between words, to the start of the previous word.
 
 ‘C-w’
      Kill from the cursor to the previous whitespace.  This is different
      than ‘M-<DEL>’ because the word boundaries differ.
 
    And, here is how to “yank” the text back into the line.  Yanking
 means to copy the most-recently-killed text from the kill buffer.
 
 ‘C-y’
      Yank the most recently killed text back into the buffer at the
      cursor.
 
 ‘M-y’
      Rotate the kill-ring, and yank the new top.  You can only do this
      if the prior command is ‘C-y’ or ‘M-y’.
 
    When you use a kill command, the text is saved in a “kill-ring”.  Any
 number of consecutive kills save all of the killed text together, so
 that when you yank it back, you get it in one clean sweep.  The kill
 ring is not line specific; the text that you killed on a previously
 typed line is available to be yanked back later, when you are typing
 another line.