MathML Fundamentals - Row in Table or Matrix mtr

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

Table Matrix - mtr align abc + 1 2 2222 3 0 1 2 300 0 1000 1 2

MathML

<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>