J.P. Instruments EDM 960 Twin Pilots Guide - Manual (Page 35)

For Your Safe Flight Page 30
Example A: Aircraft has two fuel tanks with internal tabs.
Your tank capacities are: to the tabs = 66 usable
to the caps = 66+16= 82 usable
When you refuel:
‘MAIN 66.0’: use this shortcut when filling to the internal tank tabs.
‘MAIN+AUX 82.0’: use this shortcut when filling to the caps.
(only one tank is shown in each of the two scenarios)
‘MAIN+AUX 82.0’ ‘MAIN 66.0’
2 gal unusable
tab
33 gal
2 gal unusable
33 gal
tab 8 gal