Overview of version 6.3.9600.16384 of kbdnko.dll
AltGr: This layout treats right Alt key as Control+Alt.
Directionality: The layout inserts Left-to-Right Marker (LRM) on Left Shift+Backspace and Right-to-Left Marker (RLM) on Right Shift+Backspace. Furthermore, Left Shift+Ctrl and Right Shift+Ctrl change the directionality of a paragraph, or a text box to LTR and RTL respectively.