Windows 10 tablet keyboard, adding arrow keys.

http://superuser.com/questions/1001053/windows-10-tablet-onscreen-keyboard-arrows

To enable this layout:

1. From the Start screen, open Settings (hidden behind the “hamburger” icon in the tablet mode). Another way to start the Settings app is the “All Settings” action icon in the notification center.
2. In the Settings app, select Devices → Typing.
3. Turn on the “Add the standard keyboard layout as a touch keyboard option” switch.

After enabling the layout you can switch to it using the rightmost icon in the keyboard options menu:

the standard keyboard has up and down arrow keys, useful for scrollback.  should be in the menu, but guess they don't use the keyboard and omitted them.