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- sub grid_nob nx ny xsz ysz
- gsave
- begin origin
- xinc=xsz/nx
- yinc=ysz/ny
- x=0.0
- for n=1 to nx-1
- x=x+xinc
- amove x 0
- aline x ysz
- next n
- y=0.0
- for n=1 to ny-1
- y=y+yinc
- amove 0 y
- aline xsz y
- next n
- end origin
- grestore
- end sub
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