C: holding the control key and M: holding the Alt key.
| Command | Description | 
|---|---|
C-h (or F1) | 
   Help | 
C-x 1 | 
   Remove help window. | 
C-x C-s | 
   Save a file back to disk. | 
C-x C-c | 
   Exit Emacs permanently. | 
C-x i | 
   Insert contents of another file into this buffer. | 
C-k | 
   Delete a line. | 
C-x u | 
   Undo an unwanted change. | 
M-x revert-buffer | 
   Restore a buffer to its original contents. | 
M-% | 
   Interactively replace a text string. | 
RET | 
   Exit query-replace. | 
C-s | 
   Search forward. | 
C-M-s | 
   Regular expression search | 
| 
          
     I bought a ring, and I’m ready to      pop the question (propose marriage) to Sophia  |