Does anybody know O'Haskell or Timber and its interface Tk.hs to Tcl/Tk (see here http://fldit-www.cs.uni-dortmund.de/%7Epeter/tk.html)? I have the following problem: Tk.hs http://fldit-www.cs.uni-dortmund.de/%7Epeter/Tk.hs contains a record (structure) /Canvas/ with selectors line :: [(Int,Int)] -> [LineOpt] -> Request Line polygon :: [(Int,Int)] -> [PolygonOpt] -> Request Polygon that are compiled into synonymous Tk widgets for lines and polygons, respectively. Unfortunately, Tk.hs crashes if the point list parameter of line or polygon contains more than 100 points. Why??? Of course, one may split a point list into smaller ones that are compiled correctly. But this may not produce the same picture, for instance, if the entire list represents a polygon to be filled or a line to be smoothened. Peter