sigh
Would you guys please step away from keyboards? You are disturbing my circles 
All y’all are most remarkably simultaneously right and wrong on this subject - particularly in regard to Right Alt/AltGr. You are forgetting ISO/IEC 9995-2 according to which ‘bit 6’ key can be interpreted as either Right Alt or AltGr - with both being fully correct, regardless of informal american conventions.
Also, back to pootle.