files/en-us/web/mathml/reference/element/mprescripts/index.md
The <mprescripts> MathML element is used within an {{ MathMLElement("mmultiscripts") }} element to indicate the start of the pre-scripts elements (subscripts and superscripts that are placed before the base expression).
This element supports global MathML attributes.
The first <mmultiscripts> child element becomes a base expression. The remaining children by default become post-scripts elements (a, b). <mprescripts> acts as a separator, and children after it become pre-scripts elements (c, d).
html,
body {
height: 100%;
}
body {
display: grid;
place-items: center;
font-size: 2rem;
}
<math display="block">
<mmultiscripts>
<mi>X</mi> <!-- base expression -->
<mi>a</mi> <!-- post-sub-script -->
<mi>b</mi> <!-- post-sup-script -->
<mprescripts />
<mi>c</mi> <!-- pre-sub-script -->
<mi>d</mi> <!-- pre-sup-script -->
</mmultiscripts>
</math>
{{ EmbedLiveSample('example', 700, 200, "", "") }}
{{Specifications}}
{{Compat}}