Thanx Wolfgang for reply. I had no idea that it is possible in this way to change the font size. I could not figure a way for your solution set alignment formulas to right and how work \defineformula and \definestartstop together. After defining a new MY formula in combination with your solution works it fine, as I had imagined. Is there any possibility of setting of parameters a newly defined formulas? Or, it can not be done, and everything must be solved within the initial definition? One more thanx Jaroslav Hajtmar \defineformula[MY][ align=right, strut=yes, spacebefore=, spaceafter=, ] \definestartstop[smallformula] [before={\startformula[small]}, after=\stopformula, ] % \setupformulas[align=right,strut=yes,spacebefore=,spaceafter=] % \setupformulas[smallformula][align=right,strut=yes,spacebefore=,spaceafter=] % \setupformulas[small][align=right,strut=yes,spacebefore=,spaceafter=] % \setupsmallformulas[align=right,strut=yes,spacebefore=,spaceafter=] % \setupsmallformulaformulas[align=right,strut=yes,spacebefore=,spaceafter=] % \setupformulas[MY][align=right,strut=yes,spacebefore=,spaceafter=] % \setupformulas[MYformula][align=right,strut=yes,spacebefore=,spaceafter=] % \setupMYformulas[align=right,strut=yes,spacebefore=,spaceafter=] \starttext \startformula c^2 = a^2 + b^2 \stopformula \startformula[small] c^2 = a^2 + b^2 \stopformula \startformula[8pt] c^2 = a^2 + b^2 \stopformula \startsmallformula c^2 = a^2 + b^2 \stopsmallformula \startMYformula[small] c^2 = a^2 + b^2 \stopMYformula \startMYformula[5pt] c^2 = a^2 + b^2 \stopMYformula \stoptext Dne 11.3.2015 v 0:52 Wolfgang Schuster napsal(a):
\startformula has a optional argument which let you change the font, e.g. \startformula[9pt].
\definestartstop[smallformula] [before={\startformula[small]}, after=\stopformula]
\starttext
\startformula c^2 = a^2 + b^2 \stopformula
\startformula[small] c^2 = a^2 + b^2 \stopformula
\startsmallformula c^2 = a^2 + b^2 \stopsmallformula
\stoptext