<div class="_markdown_404681">
  <p>
    #text "Trusted commands stay off: $\\href{javascript:alert(1)}{unsafe}$."
  <p>
    #text "Unbalanced errors render the error arm: $\\frac{$"
  <div class="_tableScroll_404681">
    <table>
      <thead>
        <tr>
          <th>
            #text "Symbol"
          <th>
            #text "Value"
      <tbody>
        <tr>
          <td>
            #text "$\\theta$"
          <td>
            #text "(\\frac{1}{5})"
  <div class="_block_9aea57 md-code-block">
    <div class="_bannerWrap_9aea57">
      <div class="_banner_9aea57">
        <div class="_infostring_9aea57">
        <div class="_action_9aea57">
          <button class="_copyButton_9aea57" type="button">
            #text "复制"
    <pre class="_plain_9aea57">
      <code>
        #text "\\sqrt{2}"
