Garmin GNC 355 Pilot's Manual page 168

Navigation
Roll Steering Autopilots
Roll steering terminates when
approach mode is selected on
the autopilot. It becomes
available once you initiate the
missed approach.
TO/FROM LEGS ON CDI
On these legs, the FROM/TO flag on
the CDI indicates "TO" and the
Distance field on the flight plan
decreases as you navigate the leg.
Most legs are this type
FROM/TO
Field
3-66
TO Legs
Composite CDI. When interfaced to a composite
type CDI, the composite CDI flag shows only "TO"
indications. Always refer to the FROM/TO field on the
annunciator bar when using composite CDI.
Pilot's Guide
FROM Legs
On these legs, the FROM/TO flag on
the CDI indicates "FROM" and the
Distance field on the flight plan
increases as you navigate the leg.
From legs are typically found on
procedure turns and on some missed
approach procedures.
190-02488-01 Rev. B