TM 1-1510-218-10 3-30 3.   Rotate  the  right  outer  knob  until  the cursor is positioned over the identifier adjacent to REF. 4.   Use the right inner and outer knobs to select the desired identifier. 5.   Press the   ENT  button  to  display  the waypoint  page  for  the  identifier  just entered. 6.   Press     the     ENT button again to approve    the    waypoint    page.        The intersection page is displayed with the computed radial and distance. 7.   Press  the  right   CRSR  button  to  turn off the right cursor function. x.    Supplemental Waypoint Page. Supplemental   waypoints   are   user-defined  waypoints that  have  not  been  defined  specifically  as  an  airport, VOR,  NDB,  or  Intersection.    Supplemental  waypoints also  include  ARTCC  center  waypoints  and  reference waypoints  discussed  later.    The  following  information is displayed on the supplemental waypoint page. (1)   The     name     of     the     identifier     of     the supplemental waypoint. (2)   The position of the supplemental waypoint expressed in terms of a radial and distance from a nearby VOR. (3)   The latitude and longitude of the supplemental waypoint. The identifier of another nearby waypoint may be entered  in  the  REF  field  and  the  page  will  compute and  display  the  radial  and  distance  from  the  nearby waypoint  to  the  supplemental  waypoint.    This  radial and   distance   is   not   stored   with   the   supplemental waypoint page and is lost when leaving the page. y.    Creating  User-Defined  Waypoints.     Up  to 250  user-defined  waypoints  may  be  created.    These waypoints  may  be  defined  as  a  user  defined  airport, VOR, NDB, or intersection.  If the waypoint doesn't fit into  one  of  these  categories,  it  may  be  defined  as  a supplemental waypoint. (1)   Creating A User-Defined Airport Waypoint.        A    user-defined    airport    waypoint    must contain    an    identifier,    latitude,    and    longitude.        In addition,   any   combination   of   airport   elevation,   one runway  length,  and  associated  runway  surface  (hard or soft), and remarks can also be stored.   Communication  frequencies  cannot  be  stored  on  the APT 4 page, airport services cannot be stored on the APT  6  page,  SID's  and  STAR's  cannot  be  stored  on the APT 7 page, and approach procedures cannot be stored on the APT 8 page. 1.   Use the right outer knob to select the airport waypoint pages. 2.   Rotate  the  right  inner  knob  to  select the APT 1 page. 3.   Press  the  right   CRSR  button  to  turn on   the   right   cursor   function.      The cursor     will     appear     over     the     first character of the identifier. 4.   Use the right inner and outer knobs to select the identifier of the user waypoint.  The identifier can be up to four   characters   in   length.      Refer  to Figure 3-28. 5.   To  create  a  waypoint  at  the  present position,    turn    the    right    outer    knob clockwise  to  position  the  cursor  over PRES    POS?    and    press    the    ENT button.    The  APT  1  page  will  now  be displayed with the latitude and longitude    of    the    waypoint    at    the bottom of the page. FARM CREATE NEW WPT AT: USER POS? PRES POS? CRSR Figure 3-28.  User-Defined Waypoint Page 6.   To  create  a  waypoint  at  a  specified position,  place  the  cursor  over  USER POS?  and  press  the   ENT  button.    A page with the identifier at the top and dashes    at    the    bottom    will    not    be displayed.  Refer to Figure 3-29.