grid = key=master,group=grid,depth=1,widthcm=22,heightcm=25,gcell=5,   \
       rounded=true,border_thickness=ultra thin,border_color=menublue, \
       gback_color=gray99,gline_thickness=thin,gline_color=gray95
 
circle = key=range,group=ownship,depth=2,x=-20,y=0,radius=10,         \
         line_color=dodgerblue,fill_color=invisible,line_style=solid, \
         line_thickness=thin
 
circle = key=range,group=contact,depth=2,x=20,y=0,radius=10,          \
         line_color=dodgerblue,fill_color=invisible,line_style=solid, \
         line_thickness=thin
 
wedge = key=twedge,group=ownship,depth=200,x=-20,y=0,rad_low=7,     \
        rad_hgh=7,ang_low=0,ang_hgh=135,rel_ang=0,line_color=black, \
        fill_color=empty,line_style=solid,line_thickness=very thin
 
label = key=ship_label,group=ownship,depth=205,label=ownship, \
        label_color=black,label_size=footnotesize,x=-20,y=-14
 
label = key=ship_position,group=ownship,depth=205,hidden=true, \
        label={$x_{os}$, $y_{os}$},label_color=black,          \
        label_size=footnotesize,x=-10,y=0
 
label = key=ship_label,group=contact,depth=205,label=contact, \
        label_color=black,label_size=footnotesize,x=20,y=-14
 
label = key=ship_position,group=contact,depth=205,                     \
        label={$x_{cn}$, $y_{cn}$},label_color=black,label_size=small, \
        x=30,y=0
 
vessel = key=mainship,group=ownship,depth=900,x=-20,y=0,hdg=135, \
         body_type=kayak,length=6,wid_mbody=3,wid_stern=1.629,   \
         pct_mbody=0.5,line_color=black,fill_color=gray90
 
vessel = key=mainship,group=contact,depth=900,x=20,y=0,hdg=135, \
         body_type=kayak,length=6,wid_mbody=3,wid_stern=1.629,  \
         pct_mbody=0.5,line_color=black,fill_color=gray90
 
point = key=ship_ctr,group=ownship,depth=904,x=-20,y=0,point_size=0.05, \
        point_color=black
 
point = key=ship_ctr,group=contact,depth=904,x=20,y=0,point_size=0.05, \
        point_color=black
 
line = key=pointer_line,group=ownship,depth=905,x1=-20,y1=0,x2=-14,  \
       y2=0,line_color=gray25,line_style=dashed,line_thickness=thin, \
       endtype2=arrow
 
line = key=pointer_line,group=contact,depth=905,x1=20,y1=0,x2=26,y2=0, \
       line_color=gray25,line_style=dashed,line_thickness=thin,        \
       endtype2=arrow