ng',
            latex: `\\left|
            \\begin{gathered}
                \\rule{1em}{1em}&\\rule{1em}{1em}\\\\
                \\rule{.5em}{1em}&\\rule{.5em}{1em}\\\\
            \\end{gathered}
            \\right|`,
          },
          {
            title: 'Matrix Spacing',
            latex: `\\left|
            \\begin{matrix}
                \\rule{1em}{1em}&\\rule{1em}{1em}\\\\
                \\rule{.5em}{1em}&\\rule{.5em}{1em}\\\\
            \\end{matrix}
            \\right|`,
          }