Well, many tablets, TVs and (portable) monitors are wide or even ultrawide, coming with an aspect ratio of 16:9 or even 21:9.
For landscape documents on these displays, horizontal scrolling would be ideal because it allows for showing the first bar(s) of the next page.
Example:
![[Image: yGkJiLN.jpg]](https://i.imgur.com/yGkJiLN.jpg)
Screenshot without this feature (with a lot of wasted space and no ability to look forward):
![[Image: Wog2Ruv.jpeg]](https://i.imgur.com/Wog2Ruv.jpeg)
For portrait documents, you would obviously want to use vertical scrolling, but unlike tablets, most displays and (portable) monitors don't support portrait mode. Which means you rely on the OS of your device: Windows allows for rotating external displays, but Android doesn't. So for Android devices connected to an external display (like a TV or portable monitor), horizontal scrolling would be very helpful: you could just rotate the portrait documents by 90 degrees and enable horizontal scrolling in order to mimic vertical scrolling.
Is this enough to make you understand the need for this?
For landscape documents on these displays, horizontal scrolling would be ideal because it allows for showing the first bar(s) of the next page.
Example:
Screenshot without this feature (with a lot of wasted space and no ability to look forward):
For portrait documents, you would obviously want to use vertical scrolling, but unlike tablets, most displays and (portable) monitors don't support portrait mode. Which means you rely on the OS of your device: Windows allows for rotating external displays, but Android doesn't. So for Android devices connected to an external display (like a TV or portable monitor), horizontal scrolling would be very helpful: you could just rotate the portrait documents by 90 degrees and enable horizontal scrolling in order to mimic vertical scrolling.
Is this enough to make you understand the need for this?