Apologies for all the MathML queries. Here are two more, embedded in one test file which will run on live.contextgarden.net: -- \usemodule[mathml] \setupwhitespace[medium] \starttext \TeX{} maths aligns $x$ well.\par MathML aligns \startXMLdata<imath><math><mi>x</mi></math></imath>\stopXMLdata squashed to the right.\par Also:\par \TeX{} display maths makes text go smaller for fractions inside fractions: $${{\rm Q}\over{\rm P}}\over{\rm R}$$ I'd like the same to happen for MathML: \startXMLdata <formula><math><mfrac><mrow> <mfrac><mrow><mtext>Q</mtext></mrow><mrow><mtext>P</mtext></mrow></mfrac></mrow> <mrow><mtext>R</mtext></mrow></mfrac></math></formula>\stopXMLdata \stoptext -- In summary: #1 Inline MathML has a wide space before, and no space after. #2 Display MathML doesn't reduce font size for <mtext> content such as fractions within fractions. I have done a fair bit of source- and archive-surfing on both these but no luck. Many thanks for any help. Duncan