For embedded
<svg>
elements,
the SVGHEIGHT= option specifies the height of the rectangular region
into which the
<svg>
element is placed.
The SVG output is scaled to fit the viewBox if SVGHEIGHT="100%".
If the SVGHEIGHT= option
is not specified, the height attribute on the
<svg>
element
is not set, which effectively provides full scalability by using a
height of 100%.
The value for the SVGHEIGHT=
option can be specified using no delimiters, enclosed in single or
double quotation marks, or enclosed in parentheses.