InsetVSpace: This will be easy, once we have the Length::asHTML() method.
InsetWrap: This should be simple enough, probably a div and some CSS, but I'm not sure
precisely what this is supposed to do.
-There seems not to be much here for math, so that will take some doing.
+
+MATH
+ Regarding math, the view seems to be that we should in the first instance just use what
+ we get from instant preview and copy those over to the output directory, and then try
+ to make MathML work.