! example to call label_hi_lo.jnl to label extrema 
! 1/2002 change in the "neighborhood" arguments fromm
!        number of gridpoints, to range in data units.

use coads_climatology
set region/l=7/x=100:360/y=-20:60

fill/line/pal=no_red slp; go fland
go label_hi_lo.jnl slp label 10 8 green purple

pause
contour slp
go fland
go label_hi_lo.jnl slp mark 6 6 red blue

pause
! note: cannot set region in square brackets on the call to 
!       label_hi_lo, but as long as the time region is set,the
!       script gets ppl$xmin, ppl$xmax, etc and is ok

can region
set region/l=7
fill/line/pal=no_red slp[l=7,x=100:360,y=-20:60]; go fland
go label_hi_lo.jnl slp label 10 8 green purple

message but this fails:

can region

fill/line/pal=no_red/l=7/x=100:360/y=-20:60 slp; go fland
go label_hi_lo.jnl slp[l=7] label 10 8 green purple