Mscarry is used inside of mscarries to represent the carry for an individual column. A carry is treated as if its width were zero; it does not participate in the calculation of the width of its corresponding column; as such, it may extend beyond the column boundaries. MathML Fundamentals
<math > <mspace linebreak="newline" indentalign="center"></mspace> <mtext style="border:1px;" mathsize="50">Mscarry</mtext> <mspace linebreak="newline" indentalign="center"></mspace> <mstack style="border:1px;margin:5px"> <mscarries crossout='updiagonalstrike'> <mn>2</mn> <mn>12</mn> <mscarry crossout='none'> <none/> </mscarry> </mscarries> <mn>2,327</mn> <msrow> <mo>-</mo> <mn> 1,156</mn> </msrow> <msline/> <mn>1,171</mn> </mstack> <mstack style="border:1px;margin:5px"> <mscarries location='nw'> <none/> <mscarry crossout='updiagonalstrike' 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> <mstack style="border:1px;margin:5px"> <mscarries> <mscarry crossout='updiagonalstrike'><none/></mscarry> <menclose notation='bottom'> <mn>10</mn> </menclose> </mscarries> <mn>52</mn> <msrow> <mo>-</mo> <mn> 7</mn> </msrow> <msline/> <mn>45</mn> </mstack> </math>