$SIZE="-size 10x10";
//USES A TEMP SUBDIRECTORY
$white="Temp/white.gif";
$red="Temp/red.gif";
$OUT="Temp/checkerboard.gif";
//MAKE A 10X10 WHITE XC AND A 10X10 BLUE XC
exec ("/usr/bin/convert -size 10x10 xc:white -bordercolor black -border 1x1 $white");
exec ("/usr/bin/convert -size 10x10 xc:red -bordercolor black -border 1x1 $red");
//PUT TOGETHER IN A MONTAGE
exec ("/usr/bin/montage $red $white $red $white $red $white $red $white $red $white $white $red $white $red $white $red $white $red $white $red $red $white $red $white $red $white $red $white $red $white $white $red $white $red $white $red $white $red $white $red $red $white $red $white $red $white $red $white $red $white $white $red $white $red $white $red $white $red $white $red $red $white $red $white $red $white $red $white $red $white $white $red $white $red $white $red $white $red $white $red $red $white $red $white $red $white $red $white $red $white $white $red $white $red $white $red $white $red $white $red -tile 10x10 -geometry +0+0 $OUT");
print "