TM 1-1510-218-10 3B-43 field to the right of ALT:. ANG:     – The data to the left of ANG: is the actual vertical angle between   the   present   aircraft position and the active vertical waypoint     or     vertical     offset point   if   selected,   between   0 and  9.9  degrees.    If  manual VNAV operation is utilized the pilot    may    select    a    vertical angle in the data entry field to the  right  of  ANG:.    If  manual VNAV operation is not engaged this field displays the actual vertical angle. OFST:     – The  data  to  the  left  of  OFST: is  the  distance  to  the  vertical waypoint     or     vertical     offset point   if   selected.      The   pilot may    enter    an    along    track offset   (nautical   mile)   in   the data    field    to    the    right    of OFST:.      A   positive   number puts   the   vertical   offset   point past     the     waypoint     and     a negative     number     puts     the vertical   offset   point   bet ween the aircraft and the waypoint. (18)   Hold  1  Page.    The HOLD 1 page is used to  check  position  accuracy,  to  update  the  KNS-660 position  or  create  a  waypoint  at  the  aircraft's  present position. POS     – The present position calculated  by  the  system  that was    frozen    in    this    display when    the    HOLD    key    was pressed. IDENT:     – The  waypoint  identifier  of  the fix  contained  in  the  systems memory,  that  was  over  flown to check or update position.  If the  identifier  entered  here  is not  contained  in  memory  this becomes   the   identifier   of   a waypoint with the coordinates displayed adjacent to POS. FIX:     – The actual coordinates of the position overflown. DIF     – The     difference     in     position between the systems calculated    position    and    the FIX position in degrees, minutes and tenths o minutes. UPDATE?     – A  cursor  field  used  to  update the systems position when the ENTER key is pressed. (19)   Hold  2  Page.    The HOLD 2 page is used to update the system position.  It is also used to make manual    altitude,    heading,    or    groundspeed    entries when required by the system. IDENT:     – The   waypoint   identifier   of   a point     to     be     overflown     for position updating. FIX:     – The actual coordinates of the point     to     be     overflown     for position updating. MAN HDG:°t     – This  field  will  be  present  on the HOLD 2 page only if all of the  system's  heading  source inputs    fail.        The    pilot    may manually   enter   the   aircraft's heading    referenced    to    true north in this data field. MAN ALT: FT     – This  field  will  be  present  only if  all  of  the  system's  altitude inputs    fail.        The    aircraft's altitude may then be manually entered in this data field. EST GS:     – This field will be present if the omega receiver requires dead reckoning    in    puts    to    gain navigational status. The estimated   groundspeed   may then  be  manually  entered  in this data field. UPDATE WHEN OVER POSITION FIX ^– A  non-cursor  field,  to  remind the pilot that updating the item using   the   HOLD   2   page   is done the position fix. UPDATE?     – A  cursor  field  used  to  update the system position when the ENTER  key  is  pressed.    This field  does  not effect operation of the MAN HDG:, MAN ALT:, or EST GS fields. (20)   Frequency 1 Page.   The FREQ 1 page is used for frequency management. [ ]     – Transponder code or frequency entered in the scratch   pad   area   of   display displays here.