TabularEnvironment:
    | "array"
    | "equation"
    | "equation*"
    | "subequations"
    | "multline"
    | "align"
    | "align*"
    | "aligned"
    | "eqnarray"
    | "split"
    | "gather"
    | "gather*"
    | "gathered"
    | "lines"
    | "multline"
    | "multline*"
    | "cases"
    | "dcases"
    | "rcases"
    | "smallmatrix"
    | "smallmatrix*"
    | CasesEnvironment
    | MatrixEnvironment