My latin-american keyboard comes with Alt Gr key (ISO_Level3_Shift), but it is useless for my work, so I would like to replace it with Alt R at the lowest level possible. I've tried in xmodmap with:
keysym ISO_Level3_Shift = Alt_R
but it doesn't work (xev still reports ISO_Level3_Shift).
How can I kill for good Alt GR?