In addition to the attributes defined for all presentation elements, MathML includes two mathematics style attributes (mathvariant, mathsize) as well as a directionality attribute (dir) valid on all presentation token elements. MathML Fundamentals
<math mathsize="100"> <mspace linebreak="newline" indentalign="center"></mspace> <mtext style="border:1px;" mathsize="big">Style attributes common to token elements</mtext> <mspace linebreak="newline" indentalign="center"></mspace> <mtext style="border:1px;" mathsize="normal">Style attributes common to token elements</mtext> <mspace linebreak="newline" indentalign="center"></mspace> <mtext style="border:1px;" mathsize="small">Style attributes common to token elements</mtext> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="normal">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="italic">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="bold">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="bold-italic">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="double-struck">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="double-struck-italic">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="bold-double-struck">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="double-struck-bold-italic">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="fraktur">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="bold-fraktur">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="script">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="bold-script">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="sans-serif">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="bold-sans-serif">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="sans-serif-italic">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="sans-serif-bold-italic">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathvariant="monospace">ABCDEFGHIJKLMNOPQRSTUVXYZWabcdefghijklmnopqrstuvxyzw0123456789</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;"> <mtext mathsize="50">ABC</mtext> <mtext mathsize="100">ABC</mtext> <mtext mathsize="150">ABC</mtext> <mtext mathsize="200">ABC</mtext> </mrow> <mspace linebreak="newline" indentalign="center"></mspace> <mrow style="border:1px;" dir="rtl"> <mtext mathsize="50">ABC</mtext> <mtext mathsize="100">ABC</mtext> <mtext mathsize="150">ABC</mtext> <mtext mathsize="200">ABC</mtext> </mrow> </math>