Change terminal wide between 80 and 132 column mode.
This mode only is supported when enable support for mode ?3 is set.
Modern terminals don't have a fixed width and users generally expect the terminal to keep the size they assigned to the terminal. This control violates that expectation.
If set the terminal is resized to 132 columns wide. If unset the terminal is resized to 80 columns wide.
If do not clear screen on mode ?3 change is not set, the screen is cleared.
The cursor is moved as invoking set cursor position with
row set to 1.
If the mode is set mode left and right margin is reset.
Unsets top and bottom margins.