Honeywell KMD 250 Pilot's Manual page 58

Map Operations
Turn Anticipation will be inhibited if the angle between the legs is less
than 5° or greater than 175° or the Crosstrack Error (XTK) is greater than
4 nm.
To utilize the Turn Anticipation feature, start the turn transition to the next
leg in the flight plan at the very beginning of the computed turn point.
Upon reaching this computed turn point the Waypoint Alert annunciator
will stop flashing and remain on steadily while the text "TURN TO" is dis-
played as shown in Figure 1-65.
If an autopilot is engaged, this is the time to change the selected course
on the CDI or HSI to that indicated next to TURN TO. In the case of
Figure 1-65 that would be 288° magnetic.
1-39
Rev 2 Apr/2004 KMD 250 Pilot's Guide