Some Memos
-
The property viewBox is for user unit.
It is different concept compare to the screen unit
(pixels), which is defined by the
width and height
attributes.
-
The x and y attributes
of text is different from what
shapes use for. They are mean to be the left
bottom corner.
-
All measures (x, y, cx, cy, font-size, etc.) in svg
will be relative to viewBox, if it is
defined.