KeyPress event, serial 33, synthetic NO, window 0x2800001,
    root 0x1d7, subw 0x0, time 49369104, (497,344), root:(1690,368),
    state 0x10, keycode 135 (keysym 0xff67, Menu), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: False

KeyRelease event, serial 33, synthetic NO, window 0x2800001,
    root 0x1d7, subw 0x0, time 49369216, (497,344), root:(1690,368),
    state 0x10, keycode 135 (keysym 0xff67, Menu), same_screen YES,
    XLookupString gives 0 bytes:
    XFilterEvent returns: False

xmodmap:  up to 4 keys per modifier, (keycodes in parentheses):

shift       Shift_L (0x32),  Shift_R (0x3e)
lock        Caps_Lock (0x42)
control     Control_L (0x25),  Control_R (0x69)
mod1        Alt_L (0x40),  Alt_R (0x6c),  Meta_L (0xcd)
mod2        Num_Lock (0x4d)
mod3
mod4        Super_L (0x85),  Super_R (0x86),  Super_L (0xce),  Hyper_L (0xcf)
mod5        ISO_Level3_Shift (0x5c),  Mode_switch (0xcb)