Export formats: LaTeX, ASCIIMath, plain text, JSON
Import formats: XML, JSON syntax tree, plain text, a
semantic LaTeX, and also a subset of standard LaTeX through
a third party library.
See the Import/Export example for
all natively supported formats, and see
the LaTeX import example for
limited import from standard LaTeX.
Data is stored internally in a custom XML format. Editing operations correspond loosely to XPath queries, and rendering to various output formats is a simple recursive transform (formerly XSLT). Display is done with KaTeX (with some modification).