[NTG-context] Handling MathML in ConTEXt

Dear Sir, I am new to ConTEXt. I am using the below mentioned coding in a TEX file and try to compile it in ConTEXt to get a .DVI output. But I am getting PDF output only %=============\setupbodyfont[times]\usemodule[mathml]\starttext\setupheader [state=stop]\startbuffer<math xmlns="http://www.w3c.org/mathml" version="2.0"> <mcolumn> <mn>123</mn> <mrow> <mn>456</mn> <mo>+</mo> </mrow> <mline spacing="000+"/> <mn>579</mn> </mcolumn></math>\stopbuffer\processxmlbuffer\stoptext%== Could you please help me to get .DVI output or PS from ConTEXt. Regards Anantha