--- a
+++ b/images/sepia-small/00README.txt
@@ -0,0 +1,4 @@
+# This was the cropping from the screenshots of PDL Book First Steps
+# with PDL::Graphics::Simple and on cygwin with gnuplot
+for f   in *.png ; do convert $f   -crop 628x600+93+30 trim/$f  ; done
+for png in *.png ; do convert $png -resize 33%         by3/$png ; done