% language=us runpath=texruns:manuals/math

\environment math-layout

\startcomponent math-combining

\startchapter[title=Combining formulas]

Multiple formulas can be combined by wrapping them:

\startbuffer

\fakewords{20}{30}

\startformula
    a + b = c
\stopformula

\fakewords{20}{30}

\startformulas
    \startformula
        a + b = c
    \stopformula
    \startformula
        d - e = f
    \stopformula
\stopformulas

\fakewords{20}{30}

\startformulas
    \startformula
        \frac{\frac{x}{y}}{b} = c
    \stopformula
    \startformula
        d - e = f
    \stopformula
\stopformulas

\fakewords{20}{30}
\stopbuffer

\typebuffer

When we bump the space around formulas to \type {big} we get this:

\start
    \setupformulas[spacebefore=big,spaceafter=big]
    \appendtoks\showmakeup[reset]\to\everymath
    \showboxes
    \getbuffer
\stop

The formulas get aligned on the baselline which in turn relates to the
math axis of the formula.

\stopchapter

\stopcomponent