Avidyne IFD540 Pilot's Manual page 123

Completed Checklist
If a step inadvertently has been checked off as accomplished, it
can be unchecked by selecting the step (touch it or use the
bottom right IFD knob) and then touching it a second time or
pushing the IFD knob to remove the checkmark. This will also
toggle the "Checklist Complete" text back to "Checklist Not
Completed".
TIPS AND TECHNIQUES
Backup Your Checklists
For a variety of reasons including copying onto
other IFDs, restoring post-service events, etc.,
Avidyne highly recommends backing up and storing
electronic checklists by downloading checklists onto
USB fobs. Procedures are supplied later in this
manual.
AUX Pages 4-15