[NTG-context] Class diagram in Ctx?

Hello, I'd like to create a "class diagram" (or "hierarchy chart") with ConText, something like: [class A] | \ V V [class B] [class C] Could anyone hint me how to start? Or which module to use? TikZ? - An initial hint would be appreciated, I'll study next... Thanks in advance, 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: +420 241 096 751 Fax: +420 244 461 038