ine}`,
          },
          {
            title: 'Gathered environment',
            comment: 'The cells of the matrix should be in textstyle.',
            latex: `\\begin{gathered}
  \\text{gathered}   \\\\
  \\frac12 x^2+y^2=z^2 \\\\
      x < y
  \\end{gathered}
      \\ne
  \\begin{array}{c}
  \\text{array\\{c\\}} \\\\
  \\frac12 x^2+y^2=z^2 \\\\
      x < y
\\end{array}`,
          },
          {
            title: '<kbd>cases</kbd> environment',
            pic: 'matrix-19.png',
            latex: 