Middle Button Emulation -

[Bob Goodwin]

I'm having troubled setting middle 
button emulation in a new Fedora25 
Workstation/XFCE installation. first I 
added:

Section "InputClass"
       Identifier "middle button 
emulation class"
       MatchIsPointer "on"
       Option "Emulate3Buttons" "on"
       Driver "evdev"
     EndSection

to 
/usr/share/X11/xorg.conf.d/10-evdev.conf 
as I have done in the past. then my 
notes led me to "xinput" but I can't 
make that work, dunno the right command ...

I find it hard to work without this 
feature, especially when configuring a 
new install so it is one of the first 
things I fix!

What am I doing wrong?

Bob