Changes

As mentioned above== Automatic Sub-Formula Numbering == To use subformula numbering, formulas you can be numbered using use <cmd>startsubformulas</cmd>/<cmd>stopsubformulas</cmd>. For example <table width="100%" cols="2"><tr valign="top"><td width="50%"><texcode>Examples:\startsubformulas[eq:1]\placeformula[eq:first]\startformula c^2 = a^2 + b^2\stopformula \placeformula[eq:second]\startformulac^2 = a^2 + b^2\stopformula\stopsubformulasFormula (\in[eq:1]) states the Pythagora's Theorem twice,once in (\in[eq:first]) and again in (\in[eq:second]).</texcode></td><td><context>\setuplayout[scale=0.8,width=8cm]Examples:\startsubformulas[eq:1]\placeformula[eq:first]\startformula c^2 = a^2 + b^2\stopformula \placeformula[eq:second]\startformulac^2 = a^2 + b^2\stopformula\stopsubformulasFormula (\in[eq:1]) states the Pythagora's Theorem twice, once in (\in[eq:first]) and again in (\in[eq:second]).</context></td></tr></table>  == The Manual Method == Sometimes, you need more fine grained control over numbering of subformulas. In that case one can make use of the optional agument of <cmd>placeformula</cmd> command. This (and the related <cmd>placesubformula</cmd> command have an optional argument commands which can be used to produce sub-formula numbering. For example:

\eqalignno{ c^2 &= a^2 + b^2 &\formulanumber{a} \cr c &= \left(a^2 + b^2\right)^{\vfrac{1}{2}} &\subformulanumber{b}\cr a^2 + b^2 &= c^2 &\subformulanumber{c} \cr d^2 &= e^2 &\formulanumber\cr}

\eqalignno{ c^2 &= a^2 + b^2 &\formulanumber{a} \cr c &= \left(a^2 + b^2\right)^{\vfrac{1}{2}} &\subformulanumber{b}\cr a^2 + b^2 &= c^2 &\subformulanumber{c} \cr d^2 &= e^2 &\formulanumber\cr}