All, In ams math, the default behavior of align is to align each equation on the &. By default, each equation is numbered. Individual equations can be labeled and referenced. Try: \documentclass{article} \usepackage{amsmath} \begin{document} \begin{align} F(x)&=\int_0^x f(t)\, dt\label{eq:1}\\ F'(x)&=f(x)\label{eq:2} \end{align} In equation~(\eqref{eq:1}) and equation~(\eqref{eq:2}), we see\ldots \end{document} To suppress number of equations, we use the align* environment. Try: \documentclass{article} \usepackage{amsmath} \begin{document} \begin{align*} F(x)&=\int_0^x f(t)\, dt\\ F'(x)&=f(x) \end{align*} \end{document} When one wants to number an aligned environment as a group, we use aligned instead of align. This requires that we be in math mode. Try: \documentclass{article} \usepackage{amsmath} \begin{document} \begin{equation}\label{fundthm} \begin{aligned} F(x)&=\int_0^x f(t)\, dt\\ F'(x)&=f(x) \end{aligned} \end{equation} \end{document} I can get this with amsl, with: \usemodule[amsl] \starttext \placeformula[fundthm] \startalign F(x)&=\int_0^x f(t)\, dt\\ F'(x)&=f(x) \stopalign We see in the \in{Fundamental Theorem}[fundthm] \ldots \stoptext I'm not sure how to label and reference individual equations in the align environment, however.