Lets users manipulate a screen's viewport from the keyboardjm_winsize
Valid only in character mode,
jm_winsizeinvokes the system menu and selects the Move option. Cursor keys are enabled to change the window's position, size, and the offset of its contents. You can also change focus to a sibling window.
XMITaccepts the changes;
The initial mode is resize. You can change the mode through one of these function keys: