Update README.md

README.md

@@ -34,3 +34,12 @@ cat output.gcode
 ```
 
 ![Vanderbilt Commodores Logo Gcode](examples/Vanderbilt_Commodores_logo_gcode.png)
+
+## FAQ / Interesting details
+
+* Can I convert a PDF to gcode? Yes! Follow [this guide using Inkscape to convert a PDF to an SVG](https://en.wikipedia.org/wiki/Wikipedia:Graphics_Lab/Resources/PDF_conversion_to_SVG#Conversion_with_Inkscape)
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+* Are shapes, fill patterns supported? All objects can be converted to paths in Inkscape with `Object to Path` for use with this program. Not sure how practical fill patterns would be -- if you have ideas, feel free to open as issue or a PR.
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+* What about a generic PPD driver for using a plotter as a printer? I thought about doing something like this where you package ghostscript + inkscape + svg2gcode but since plotter dimensions and capabilities vary, this is an exercise left to the reader for now.
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