This work has been released into the public domain by its author, Brion VIBBER. This applies worldwide.
In some countries this may not be legally possible; if so: Brion VIBBER grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
The example above is overly complicated and bloated:
The aspect ratio 2:3 is realized with 318.898×212.598, but 300×200 or 600×400 does the same more simply.
font-size does not need to be declared, as there is no text in the graphic.
fill-rule, stroke-width, fill-opacity declarations are not needed, as these properties are not invoked anywhere.
Transformations are not needed, as the image is not scaled or rotated.
This is typical Sodipodi/Inkscape overkill, even on images consisting of just a few simple geometric shapes. The same image can be produced with just a few lines of code: