The Sifflet visual functional programming language and aid to understanding recursive functions (http://mypage.iu.edu/~gdweber/software/sifflet/home.html)

#16Error in fixed literal ["a", "b"]

16 Editing a function, if you enter the literal ["a", "b"], the program crashes with this message: sifflet-new-expr: makeFixedLiteralTool: non-empty list expression EList [EString "a",EString "b"]

O: 2010 aug 16

P: high

C: 2010 aug 16 -- fixed.