Garmin GPS 175 Pilot's Manual page 135

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
TO LEGS
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
190-02207-02 Rev. B
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.
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.
GPS 175/GNX 375 Pilot's Guide
Navigation
FROM LEGS
3-59