The class option which is supported by almost all reStructuredText directives.
The image directive for span elements, see http://docutils.sourceforge.net/docs/ref/rst/directives.html#image for details.
The name option which is supported by almost all reStructuredText directives.
The standard class and name options supported by most directives, combined in the result into an Options instance.
Converts an optional id and an optional style parameter containing
a space-delimited list of styles to an Options
instance.