.
Latitude and longitude (for example, N4731.8W12218.3).

Enter into the route by line selecting to the appropriate waypoint
sequence.
Repeat the above steps to define additional created waypoints as
desired. Correct any ROUTE DISCONTINUITY.
EXEC key .........................................................................................Push Observe the MOD RTE or MOD RTE LEGS page changes to ACT (for an inactive route, activate and execute on the RTE or RTE LEGS page).
Entering Created Waypoints on the Nav Data Pages
Note: Created waypoints entered on the SUPP NAV DATA pages (permitted on the ground only) are stored in the supplemental navigation data base for an indefinite time period; those entered on REF NAV DATA pages are stored in the temporary navigation data base for one flight only.
Copyright . The Boeing Company. See title page for details.
Supplementary Procedures -Flight Management, Navigation

737 Flight Crew Operations Manual
INIT/REF key .................................................................................. Push

Observe INDEX prompt displayed.
INIT/REF INDEX page ................................................................. Select

Observe the NAV DATA prompt displayed. To access the SUPP NAV DATA page, enter SUPP into the scratch pad.
NAV DATA page ............................................................................ Select

(If the SUPP NAV DATA page is selected, observe the EFF FRM date line displayed. If an effective date had not been previously entered, box prompts are displayed. The effective date must be entered before proceeding. If required, enter the current or appropriate date on EFF FRM line and execute.)
Data ..................................................................................................Enter

Enter a crew-assigned identifier on either the WPT IDENT, NAVAID IDENT, or AIRPORT IDENT line, as appropriate. Use the navaid category only for stations with DME.
For a WPT IDENT entry, define the waypoint with entries for either latitude and longitude, or with entries for REF IDENT and RADIAL/DIST (REF IDENT identifier must already be stored in one of the FMC data bases).
For a NAVAID IDENT or AIRPORT IDENT entry, enter appropriate data.
EXEC key illuminates when data has been entered into all box
prompts.
EXEC key ........................................................................................ Push

Repeat above steps to define additional created waypoints as desired. To enter a new identifier in the same category, simply overwrite the previous identifier.
Note:  To enter a created waypoint into the flight plan, key the identifier into the scratch pad and follow the route modification procedure.
Deleting Created Waypoints on the Nav Data Pages
INIT/REF key .................................................................................. Push

Copyright . The Boeing Company. See title page for details.

Supplementary Procedures -Flight Management, Navigation 737 Flight Crew Operations Manual
Observe the INDEX prompt displayed. INIT/REF INDEX page..................................................................Select Observe the NAV DATA prompt displayed. To access the SUPP NAV DATA page, key SUPP into the scratch pad. NAV DATA page ............................................................................Select Enter the identifier on either the WPT IDENT, NAVAID IDENT, or AIRPORT IDENT line, as appropriate. Data................................................................................................ Delete Push the DEL key and then line select the identifier. Observe the EXEC key illuminates. EXEC key .........................................................................................Push Data previously entered is deleted. Observe NAV DATA page displayed with prompts.
Entering a Crossing Radial (Bearing) or Distance from a Fix as a Route Waypoint
FIX INFO page...............................................................................Select

Enter identifier of the reference waypoint (normally an off–route waypoint) onto the FIX line. Enter the desired radial or distance from the FIX on a RAD/DIS line, or line select the ABM prompt if the desired radial or distance from the FIX is perpendicular to the present route/course.
Line select the desired intersection (lines 2L–5L) into the scratch pad and observe the new created waypoint displayed as FIX/Radial/Distance.
RTE LEGS page .............................................................................Select

Line select the new created waypoint, displayed in the scratch pad, to the desired waypoint sequence.
Repeat the above steps to define additional created waypoints as
desired. Correct any ROUTE DISCONTINUITIES.
　
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