Dear Jeroen, If you change “pair a;” to “numeric a;” in the second MPcode, it draws a circle without error.
Best regards, Dalyoung > > \placefloatright{}{ > \startMPcode > pair a; numeric a; > a := 2cm; > draw fullcircle scaled (2*a); > \stopMPcode} > > \stoptext > ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________