Hello Two hours of Google and Linux websites and I can't find the answer. My wife has RSI and would like to use one of the buttons on her mouse for doubleclick. Here is how her XF86Config looks: Section "InputDevice" Driver "mouse" Identifier "Mouse[1]" Option "Buttons" "7" Option "Device" "/dev/mouse" Option "Name" "Autodetection" Option "Protocol" "imps/2" Option "Vendor" "Sysp" Option "ZAxisMapping" "6 7" EndSection After running xmodmap -e "pointer = 3 2 1 6 7 4 5" ! note left-hand mouse Everything works OK except that the side buttons behave as buttons 1 and 2 (as reported by xev). Just like a three-button wheel mouse. Can the side buttons be differentiated? Is it possible to assign a doubleclick to one of them? Is it possible to assign a drag lock to the other one? TIA & cheers P.S. Kensington Optical Elite mouse.