TM 1-1510-225-10 3D-8 the  left  side  of  the  unit  are  used  to  select  pages  and enter data on the left side of the screen.  Likewise, the two  concentric  knobs  and  the  CRSR  button  on  the right  side  of  the  unit  are  used  to  select  pages  and enter data on the right side of the screen. The  cursor  is  an  area  of  inverse  video  on  the screen.  On many pages, data can be added, deleted, or  changed  by  first  pressing  the  appropriate   CRSR button  to  turn  the  cursor  function  on  and  bring  the cursor on the screen.  The appropriate knobs are then used   to   enter   the   data.      When   a   cursor   is   on   the screen, the page name normally shown in the left  and right    lower    segments    is    replaced    with    a    CRSR annunciation in inverse video. a.   Page   Selection.      The   left   outer   knob   is rotated  to  select  one  of  eight  page  types  for  the  left side of the screen.  Refer to Table 3D-1. NOTE The cursor function must be off. Rotating the left outer knob one detent clockwise or  counterclockwise  selects  the  page  type  marked  on the  knob  in  that  direction.    Once  the  page  type  has been   selected   with   the   left   outer   knob,   the   page number is selected by rotating the left inner knob. The right side operates in a similar manner. The navigation  pages  are  available  on  both  sides.    The remainder  of  the  page  types  are  different.    Refer  to Table 3D-2. Only the right inner knob has both an in and an out position.  With the knob pushed in, it works exactly as the left inner knob.  In the out position, it performs a waypoint  scan  function.    The  usual  position  for  the right inner knob is the in position. b.  Waypoint Data Entry. 1.   Press cursor to turn on the cursor function. 2.   Rotate   the   outer   knob   to   position   the cursor    in    the    desired    location.        The location  will  vary.    Waypoint  identifiers  will be     in     different     places     on     the     page depending on the type page selected. 3.   Rotate  the  inner  knob  to  select  the  first character of the waypoint identifier. Table 3D-1.  Left Side Types PAGE IDENTIFIER KNOB MARKING PAGE NAME PAGE NUMBERS TRI TRIP Trip Planning 0-6 MOD MODE Mode 1-2 FPL FPL Flight Plan 0-25 NAV NAV Navigation 1-5 CAL CALC Calculator 1-7 STA STAT Status 1-5 SET SETUP Setup 0-9 OTH OTHER Other 1-4* *Up to 10 with fuel management system and air data interfaces Table 3D-2.  Right Side Page Types PAGE IDENTIFIER KNOB MARKING PAGE NAME PAGE NUMBER CTR CTR Center WPT 1-2 REF REF Reference WPT None ACT ACTV Active WPT * D/T D/T Distance/Time 1-4 NAV NAV Navigation 1-5 APT APT Airport WPT 1-8 VOR VOR VOR WPT None