The recent inkscape-devel discussion about guide lines mentions «to have 0-thickness lines with a border (different than lines with no border), so they are always drawn with 1 pixel width depending on the device resolution (1 point if printed, 1 pixel on screen regardless the zoom level, etc...)»
<http://thread.gmane.org/gmane.comp.graphics.inkscape.devel/31622/focus=31651>
The recent inkscape-devel discussion about guide lines mentions «to have 0-thickness lines with a border (different than lines with no border), so they are always drawn with 1 pixel width depending on the device resolution (1 point if printed, 1 pixel on screen regardless the zoom level, etc...)» thread. gmane.org/ gmane.comp. graphics. inkscape. devel/31622/ focus=31651>
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