Changes

* [http[manual://www.pragma-ade.com/general/manuals/metafun-s.pdf |MetaFun manual]]* [http[manual://www.pragma-ade.com/general/manuals/mmakempy.pdf |MakeMPY: create MetaPost outlines]]* [http[manual://www.pragma-ade.com/general/sources/mptopdf.pdf |MPtoPDF: create PDF from MetaPost]]* [http[manual://www.pragma-ade.com/show-gra.pdf |a few examples of MetaPost graphics]]* [http[manual://www.pragma-ade.com/articles/art-puzz.pdf |Puzzling graphics in MetaPost]] (article)