barcodes.py: Move and document sheet variables

barcodes.py

@@ -1,7 +1,7 @@
 #!/usr/bin/python
 #
 # accept strings on stdin and put them to a SVG in grid layout
-# compatible with our sticker papers
+# compatible with our sticker sheets
 #
 # example: seq -f %06g 0 1000 | ./barcodes.py
 #
@@ -19,6 +19,13 @@ parser = argparse.ArgumentParser()
 parser.add_argument('-b', '--brmlabel', action='store_true')
 args = parser.parse_args()
 
+# This setting is appropriate for printing to 7x2 sticker sheets
+# oriented at landscape, with 5 codes per sticker.
+cntx = 7
+cnty = 10
+scalex = 1
+scaley = 0.8
+
 svghead = """<?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" width="1052.3622" height="744.09448" version="1.1" id="svg2" inkscape:version="0.47 r22583" sodipodi:docname="barcodes.svg">
 """
@@ -27,11 +34,6 @@ svgfoot = """
 </svg>
 """
 
-cntx = 7
-cnty = 10
-scalex = 1
-scaley = 0.8
-
 f = open('barcodes.svg','w')
 f.write(svghead)