On Sun, Dec 10, 2017 at 1:00 PM Rainer Stengele <
rainer....@online.de>
wrote:
I believe you simply
1. Select the rectangle:
AAAA
BBBB
CCCC
2. Cut the rectangle: C-x r k
3. Move point to the starting of the line containing "1111".
4. Paste the rectangle back: C-x r y
--
Kaushal Modi