This is how standard UdpGraph.ini looks like:
[settings]
server = 21100 127.0.0.1 127.0.0.1 keyfile = dlkeys.il2
interval = 500
mode=0
autoscale=1
showscale=0
dynscale=1
font name=Courier New
font size=14
mask=xxxx.xx
log path=c:\il2log
log active=0
log timestamp=1
log tod=0
log time format=0
log msec=1
log hotkey=Ctrl+Alt+A
[keys]
azimuth ispeed altimeter
[graphs]
isp = 255 0 0 0.0 1 ispeed
alt = 255 255 255 0 1 altimeter
enr = 0 255 0 0.0 1 altimeter + ((ispeed/3.6)^2)/(2*9.81)