An mtr element represents one row in a table or matrix. An mtr element is only allowed as a direct sub-expression of an mtable element, and specifies that its contents should form one row of the table. Each argument of mtr is placed in a different column of the table, starting at the leftmost column in a LTR context or rightmost column in a RTL context. MathML Fundamentals
<math mathsize="50"> <mspace linebreak="newline" indentalign="center"></mspace> <mtext style="border:1px;" mathsize="50">Table Matrix - mtr align</mtext> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext>abc</mtext> <mo>+</mo> <mtable style="border:1px" rowalign="center" columnalign="right"> <mtr> <mtd> <mfrac> <mn>1</mn> <mn>2</mn> </mfrac> </mtd> <mtd> <mn>2222</mn> </mtd> <mtd> <mn>3</mn> </mtd> </mtr> <mtr rowalign="top" columnalign="left"> <mtd> <mn>0</mn> </mtd> <mtd> <mfrac> <mn>1</mn> <mn>2</mn> </mfrac> </mtd> <mtd> <mn>300</mn> </mtd> </mtr> <mtr> <mtd> <mn>0</mn> </mtd> <mtd> <mn>1000</mn> </mtd> <mtd> <mfrac> <mn>1</mn> <mn>2</mn> </mfrac> </mtd> </mtr> </mtable> </mrow> </math>