Update
Set Visual Update ON | OFF [ Except 7 ]
(Default=Off)
If you find that you are losing work by pressing F5 or another function key before you have saved your screen work with the Enter key, this option is for you. When Set Vis Update is ON, Qedit does an automatic screen update with every function key. This makes it almost impossible to lose your changes, but it does slow down Visual mode. However, you may do *> F7 or *< F7 to move ahead or back one page, without updating the current page. Note: to refresh the screen, type * in the home line before pressing any function key or Enter.
If you want to be able to execute a command via F7 without updating the screen, use Set Vis Update On Except 7.