ClearSpeak: multiline

case_1: f of x is equal to; 3 cases, \
case 1; negative 1 if x; is less than 0; \
case 2; 0 if x, is equal to 0; \
case 3; 1 if x, is greater than 0;

f (x) = {\begin{matrix} - 1 if x < 0 \\ 0 if x = 0 \\ 1 if x > 0 \end{matrix}

equation_auto: 2 lines, \
line 1; x plus y, is equal to, 7; \
line 2; 2 x plus 3 y, is equal to, 17;

\begin{matrix} x + y & = & 7 \\ 2 x + 3 y & = & 17 \end{matrix}

equation_case: 2 cases, \
case 1; x plus y, is equal to, 7; \
case 2; 2 x plus 3 y, is equal to, 17;

\begin{matrix} x + y & = & 7 \\ 2 x + 3 y & = & 17 \end{matrix}

equation_constraint: 2 constraints, \
constraint 1; x plus y, is equal to, 7; \
constraint 2; 2 x plus 3 y, is equal to, 17;

\begin{matrix} x + y & = & 7 \\ 2 x + 3 y & = & 17 \end{matrix}

equation_equation: 2 equations, \
equation 1; x plus y, is equal to, 7; \
equation 2; 2 x plus 3 y, is equal to, 17;

\begin{matrix} x + y & = & 7 \\ 2 x + 3 y & = & 17 \end{matrix}

equation_line: 2 lines, \
line 1; x plus y, is equal to, 7; \
line 2; 2 x plus 3 y, is equal to, 17;

\begin{matrix} x + y & = & 7 \\ 2 x + 3 y & = & 17 \end{matrix}

equation_none: 2, x plus y, is equal to, 7; \
2 x plus 3 y, is equal to, 17;

\begin{matrix} x + y & = & 7 \\ 2 x + 3 y & = & 17 \end{matrix}

equation_row: 2 rows, \
row 1; x plus y, is equal to, 7; \
row 2; 2 x plus 3 y, is equal to, 17;

\begin{matrix} x + y & = & 7 \\ 2 x + 3 y & = & 17 \end{matrix}

equation_step: 2 steps, \
step 1; x plus y, is equal to, 7; \
step 2; 2 x plus 3 y, is equal to, 17;

\begin{matrix} x + y & = & 7 \\ 2 x + 3 y & = & 17 \end{matrix}