test for : mscarry crossout="downdiagonalstrike"
<math xmlns="http://www.w3.org/1998/Math/MathML"> <mstack> <mscarries location="nw"> <none/> <mscarry crossout="downdiagonalstrike" location="n"> <mn>2</mn> </mscarry> <mn>1</mn> <none/> </mscarries> <mn>2,327</mn> <msrow> <mo>-</mo> <mn>1,156</mn> </msrow> <msline/> <mn>1,171</mn> </mstack> </math>