+Formula numbering
+\begin_inset IndexMacro subentry
+status open
+
+\begin_layout Plain Layout
+subnumbering
+\end_layout
+
+\end_inset
+
+
+\end_layout
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+Formulas can be numbered as subequations.
+ To activate this feature,
+ add the module
+\family sans
+Subequations
+\family default
+ to the document in the menu
+\family sans
+Document\SpecialChar menuseparator
+Settings\SpecialChar menuseparator
+Modules
+\family default
+.
+ To insert subequations use the menu
+\family sans
+Insert\SpecialChar menuseparator
+Custom Insets\SpecialChar menuseparator
+Subequations
+\family default
+.
+\end_layout
+
+\begin_layout Standard
+The equations to be subnumbered are put into the
+\family sans
+Subequations
+\family default
+ inset.
+ An example:
+\begin_inset Formula
+\begin{equation}
+A=C-B
+\end{equation}
+
+\end_inset
+
+
+\begin_inset VSpace -5mm
+\end_inset
+
+
+\begin_inset Flex Subequations
+status open
+
+\begin_layout Plain Layout
+\begin_inset Formula
+\begin{equation}
+B=C-A\label{eq:b}
+\end{equation}
+
+\end_inset
+
+
+\begin_inset Formula
+\begin{equation}
+C=A+B\label{eq:c}
+\end{equation}
+
+\end_inset
+
+
+\end_layout
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+Every formula in the
+\family sans
+Subequations
+\family default
+ inset will be subnumbered with a,
+ b,
+ c,
+ \SpecialChar ldots
+ in the output.
+ For multiline formulas every line will be subnumbered.
+\end_layout
+
+\begin_layout Standard
+Referencing subequations works like normal equations:
+
+\begin_inset CommandInset ref
+LatexCommand eqref
+reference "eq:b"
+nolink "false"
+
+\end_inset
+
+,
+
+\begin_inset CommandInset ref
+LatexCommand eqref
+reference "eq:c"
+nolink "false"
+
+\end_inset
+
+.
+ If you want to reference the subequations collectively,
+ insert a label as first thing in the
+\family sans
+Subequations
+\family default
+ inset.
+ Formula
+\begin_inset CommandInset ref
+LatexCommand eqref
+reference "eq:Here-is-an"
+plural "false"
+caps "false"
+noprefix "false"
+nolink "false"
+
+\end_inset
+
+ is an example.
+\end_layout
+
+\begin_layout Standard
+When inserting subequations,
+ vertical space is added before the equation.
+ To remove this,
+ insert -5
+\begin_inset space \thinspace{}
+\end_inset
+
+mm vertical space right before the
+\family sans
+Subequations
+\family default
+ inset.
+ If the formula style
+\series bold
+Indented
+\begin_inset Foot
+status open
+
+\begin_layout Plain Layout
+For formula styles see
+\begin_inset CommandInset ref
+LatexCommand ref
+reference "sec:Formula-Styles"
+nolink "false"
+
+\end_inset
+
+