How important is the portrait-only mode for long ipad form?

1. What is landscape mode on iPad?
2. How do I change portrait to landscape?

What is landscape mode on iPad?

Rotate to the vertical position to change the screen to portrait mode or rotate to the horizontal position to change the screen to landscape mode. You can lock or unlock the orientation in your iPad's iOS control center panel by swiping up from the bottom edge of the iPad and tapping the orientation lock icon.

How do I change portrait to landscape?

Swipe down from the top of your screen to enable "Auto-Rotate," then turn your phone to the side to switch to landscape mode. Turn your phone upright to switch back to portrait mode.