Changes

Break down first items describing ExternalObject

Having separate items for the constructor and destructor makes the item list easier to organize and digest.

Fix white-space errors in recently introduced example on derivative

Don't call "over-optimize" when tools are clever

Add some text to example on derivative 'order'

Now as example

Based on the reformulation of "over-optimize", this has become more of a typical example than a non-normative explanation.

Expect MathJax to become obsolete rather than workaround in LaTeXML

Break down first items describing ExternalObject

Having separate items for the constructor and destructor makes the item list easier to organize and digest.

Fix white-space errors in recently introduced example on derivative

Don't call "over-optimize" when tools are clever

Add some text to example on derivative 'order'

Now as example

Based on the reformulation of "over-optimize", this has become more of a typical example than a non-normative explanation.

Expect MathJax to become obsolete rather than workaround in LaTeXML