function zoomout(args)
step=subwrd(args,1)
'query defval numzoom 1 1'
nzpt = subwrd(result,3)
if(nzpt+step<=0)
'unzoomc'
'zoomprep'
else
nzpt=nzpt+step
'define numzoom='nzpt
'query defval 'lonlo%nzpt' 1 1'
lonlo=subwrd(result,3)
'query defval 'lonhi%nzpt' 1 1'
lonhi=subwrd(result,3)
'query defval 'latlo%nzpt' 1 1'
latlo=subwrd(result,3)
'query defval 'lathi%nzpt' 1 1'
lathi=subwrd(result,3)
'set lon 'lonlo' 'lonhi
'set lat 'latlo' 'lathi
'clear'
endif
return
