Mine is using the arrow keys to navigate typed text while writing and editing. It helps speed things up, versus having to move your hand to the mouse to navigate.
Use the Up and Down Arrows to move/jump vertically.
Left and Right Arrows to move/jump horizontally.
Combine Left or Right Arrow with Shift to be able to select text. Use Up or Down Arrow with Shift to quickly select whole/nearly whole sections of text.
Combine Control with Left/Right Arrow to jump whole words to more quickly move to where you want to type.
Ctrl + shift + esc brings up the Windows task manager directly instead of the menu you get when you press ctrl + alt + del
Just remember that ctrl+alt+del is a system level interrupt that should always work as long as the kernel is running. Ctrl+shift+esc is not, and won’t work in some situations like being used inside a fullscreen frozen program.