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  ilk: Scaling


That origin, at the upper left-hand corner, is the default origin of the transformation, the same as giving "-0 p:0,0" on the command-line:
ilk -i init.ppm -t scale:2,2 | tojpg > scale2.jpg
But it can be set to the opposite corner of the image:
ilk -i init.ppm -0 u:1,1 -t scale:1.2,4 | tojpg > scale24.jpg