Picture mode defines commands for working on rectangular pieces of the text in ways that fit with the quarter-plane model. The standard rectangle commands may also be useful. See Rectangles.
Clear out the region-rectangle with spaces
picture-clear-rectangle). With a prefix argument, delete the
Similar, but save rectangle contents in register r first
Copy last killed rectangle into the buffer by overwriting, with upper
left corner at point (
picture-yank-rectangle). With argument,
Similar, but use the rectangle in register r
The picture rectangle commands C-c C-k
picture-clear-rectangle) and C-c C-w
picture-clear-rectangle-to-register) differ from the standard
rectangle commands in that they normally clear the rectangle instead of
deleting it; this is analogous with the way C-d is changed in Picture
However, deletion of rectangles can be useful in Picture mode, so these commands delete the rectangle if given a numeric argument. C-c C-k either with or without a numeric argument saves the rectangle for C-c C-y.
The Picture mode commands for yanking rectangles differ from the
standard ones in that they overwrite instead of inserting. This is
the same way that Picture mode insertion of other text differs from
other modes. C-c C-y (
(by overwriting) the rectangle that was most recently killed, while
C-c C-x (
likewise for the rectangle found in a specified register.