Android Keyboard Shortcuts:

http://freaktab.com/forum/tv-player-support/general-tv-player-dicussions/19428-android-external-keyboard-shortcut-keys-documentation

https://www.howtogeek.com/175267/the-htg-guide-to-using-a-bluetooth-keyboard-with-your-android-device/

https://www.techspot.com/guides/1145-software-shortcuts/page7.html


Disabling the SwiftKey notification when using more than one keyboard:

https://support.swiftkey.com/hc/en-us/articles/201644832-I-keep-getting-a-notification-saying-Choose-input-method-