The Sifflet visual functional programming language and aid to understanding recursive functions (http://mypage.iu.edu/~gdweber/software/sifflet/home.html)
#35vcCloseFrame does not remove the frame's subgraph from the canvas graph.
vcCloseFrame removes only the WFrame node, not the WSimple nodes displayed in the frame. It should remove all of them, otherwise clutter builds up every time a function definition is applied, since the apply command calls vcCloseFrame and then vcAddFrame.
O: 2012 Jun 27 R: gdw P: high C: 2012 Jun 27 fixed.
