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Hello, I'm trying to typset some math. when I use \startbuffer ...here mathml ...\stopbuffer and a following \processXMLbuffer I get a nice centered formula. When I save that code to a file myeq1.xml and try to include it with \processXMLfile{myeq1.xml}I compillation stops at that point. \processXMLfilegrouped{myeq1.xml} produces a formula again but 2 additional symbold appear at the beginning of the formula. Questions: - What is my fault? - Whow can I set the alignment of formulas (ie leftaligned)? Thanks for any help \usemodule[mathml] \defineXMLentity [PartialD] {\getXMLentity{differentiald}} \starttext \startbuffer <math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> <mrow> <mi>q</mi> <mo>=</mo> <mfrac> <mrow> <mo>∂</mo> <mi>p</mi> </mrow> <mrow> <mo>∂</mo> <mi>x</mi> </mrow> </mfrac> <mo>=</mo> <mo>∂</mo> <mfenced> <mrow> <mi>φ</mi> </mrow> </mfenced> <msub> <mi>p</mi> <mrow> <mi>v</mi> <mi>s</mi> <mi>a</mi> <mi>t</mi> </mrow> </msub> <mfenced> <mrow> <mi>θ</mi> </mrow> </mfenced> <mfrac> <mrow> <mo>∂</mo> <mi>φ</mi> </mrow> <mrow> <mo>∂</mo> <mi>x</mi> </mrow> </mfrac> </mrow> </math> \stopbuffer \processXMLbuffer \stoptext