While experimenting with "undefine", I discovered, that even quite important functions, like "write" or "display" can be undefined. The problem is, that calling them after they have been "undefined", leads to an endless regression, displaying a Segmentation fault, when finally interrupted.
If I "undefine" list: (undefine list) and call it afterwards: (list 1 2 3 4) I get the expected "ABORT: (unbound-variable) I would be glad to help out, to fix this. Be greeted, Fabian Schütz
