[NTG-context] Metapost: How to get total number of pages?

Hello, it seems that there is 'PageNumber' variable (macro) available within MP code, maybe introduced by 'StartPage', within MP. How do I get total number of pages or last page number within MP (in Ctx: \totalnumberofpages, \lastpage)? TIA. Best regards, Lukas -- Ing. Lukáš Procházka | mailto:LPr@pontex.cz Pontex s. r. o. | mailto:pontex@pontex.cz | http://www.pontex.cz | IDDS:nrpt3sn Bezová 1658 147 14 Praha 4 Mob.: +420 702 033 396