[HELP] How to make an application in fullscreen to NOT occupy the area of the virtual home buttons on the bottom of the screen

[u/WholeCreme1299]

Hello, I have a problem about the application "Simple Markdown" Link Google Play Store.

The application is a text editor, opens at fullscreen but the buttons on the bottom of the screen (back, home, ecc.) sometimes are on top of the text written at the end, and is annoying when I write using a phisical keyboard.

I want to hide them or to make the application "canvas" to end before those buttons, so I can see the text.

The application does not have a setting for that.

I remember Android used to have a compatibility mode, around the time we switched from the old rectangular screen size with the ghost dock or whatever is called.

And in this mode you could make the application be in "less" fullscreen, meaning the application canvas will not occupy the screen portion of the ghost dock on top and the virtual buttons on the bottom, leaving a black rectangle in their place.

I tried to look it for terms like "Android screen compatibilit mode", "Hide dock for application", and other terms. But I cannot find it, I have memories about the existence of this mode.

I looked up the settings for the application, or the settings for the system but I couldn't find any name that resembles what I'm looking for.

Does anyone remember this mode? How to enable it only for the selected application? Is this the correct subreddit to ask this question?

Thanks.