Beechcraft C-12C Operator And Technical Reference Manual page 464

TM 1-1510-218-10
Aircraft overflies pseudo-waypoint and turns to capture the next course (S-turns likely).
Figure 3C-55. Parallel Offset Transition with Large Course Change
To enter an altitude, select the Flight Plan
Waypoint page for the waypoint where it is to be
assigned. Refer to Figure 3C-56 and Table 3C-43.
Altitudes are entered in feet and are automatically
referenced by the FMS-800 to the local baroset. If a
flight level is desired enter FL followed by the three-
digit flight level. This indicates that the altitude is
3C-110
NOTE
referenced in the FMS-800 to the flight level pressure
datum (29.92 in. Hg) instead of the local barometric
pressure. The FMS-800 automatically computes the
guidance through the transition altitude (climbs) or
transition flight level (descents) if the above procedure is
followed, regardless of where the transition takes place,
which may vary in different countries.