I try to sqeeze smth out of an OrderedTable. The manual doesn't tell much about it. There is a "first" and a "last". I would expect that an OrderedTable can give back a number, being the n-th insertion of some data, e.g. tab[key].index. And, if I want, the data itself. What are "first" and "last" good for? I'd expect that "first" is always one ore zero and "last" indicates the index of the last insertion (it might be equal with counter).