TM 1-1510-218-10 3B-40 waypoint, dashes will be displayed. The field may be used to display a waypoint from flight  plan  0  by  entering  the  desired  waypoint  number into this data entry field. ACT     – Indicates  the  active  waypoint number  from  the  active  flight plan.  If the direct to feature is being  used  and  the  direct  to waypoint  is  not  contained  in the  active  flight  plan,  then  a "D" will be displayed. USE?     – Queries    the    operator    if    he wants  to  make  the  displayed waypoint the active waypoint.   To  do  so,  position  the  cursor is   over   this   field   and   press ENTER. WPT NAME:     – The  identifier  or  name  of  the displayed     waypoint.        From one to five alphanumeric characters are used to identify a waypoint. REF NAME:     – Reference     facility     identifier.   The  pilot  may  enter  a  navaid, airport,  or  any  other  waypoint stored in memory within 200  NM of the waypoint being defined.    However,  to  utilize the    VOR    sensor    (VOR    or BLEND sensor selected) while operating in OBS method  of  operation  the  REF NAME entry must be a navaid identifier.    In  OBS  operation the   reference   navaid   is   the only station tuned by the VOR navigation    receiver    and    the DME (or TACAN). FREQ     – Frequency   of   the   reference navaid.          If     the     reference facility  input  is  a  navaid,  its frequency is automatically entered.  When the reference facility identifier entered is not a navaid, blanks are displayed. A caret (>) will be displayed between FREQ and the  frequency  field  when  using  the  TACAN  sensor.   With  the  cursor  over  the  frequency  field  the   CLEAR key  is  used  to  select  either  frequencies  or  TACAN channels.    The  system  will  remain  in  the  FREQ  or CHNL select mode until changed by the pilot. RAD DIS:     – Radial  and  distance  from  the reference facility to the waypoint. LAT: LON:     – Position of the waypoint presented     as     latitude     and longitude    coordinates    using degrees,  minutes  and  tenths of minutes. RUNWAY/OM?     – This cursor field allows selection of runway thresholds and outer markers.   It appears whenever the data base  is  loaded  with  runway thresholds and/or outer markers and when the identifier     displayed     in     the WPT NAME field is an airport. 44 WPTS AVAIL     – When   the   waypoint   page  is initially displayed, after having been previously approved, the number  of  memory  locations available for waypoint storage is displayed. APPROVE?    – Following  the  first  data  entry on    the    waypoint    page    the WPTS AVAIL will be removed.      The   APPROVE? field will then appear. When clearing a waypoint page, the interrogative field DELETE? will appear in place of APPROVE?. (13)   Waypoint  Used-In  Page.     The  waypoint used-in  page  is  used  for  deleting  a  waypoint.    The page   displays   the   identifier   of   the   waypoint   to   be deleted. DELETE?     – With  the  cursor  over  the  field to    be    deleted,    the    field    is deleted by pressing the ENTER key. (14)   Waypoint    Runway/Outer    Marker    Page.   When the selected waypoint is an airport and the data base contains runway and/or outer marker information the message RUNWAY/OM? will appear at the bottom of the waypoint page.  The runway/outer marker page can then be selected.  A runway or outer marker may be selected from the listing on this page. SEL RW/OM:     – The  menu  number  to  the  left of the desired runway threshold or outer marker may be entered in this field.