[NTG-context] Math and units

Hello, which is the most correct way to display units (here: kN) in math formula? ---- \starttext \startformula a = 210 kN % "kN" is shown like a variable (here: like 'a'), which is unwanted \stopformula \startformula a = 210 \unit{kN} % No unit is displayed (?!) \stopformula \startformula a = 210 \text{~kN} % '~' required?, ugly way \stopformula \stoptext ---- TIA. Best regards, Lukas -- Ing. Lukáš Procházka [mailto:LPr@pontex.cz] Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038