Documenting source code

Well, well. If your "undocumentation" is in form of

    /** nTuple class */
    class nTuple {
    ...

... or

    /** creates copy of nTuple */
    static function copy($nTuple)
    ...

... or

    /**  Creates a string representation of an n-tuple. */
    static function toString($nTuple)

no wonder you will not be seeing the value of documenting. (Hint: just leave such trivial comments out. In case of "copy" function, you might want to tell us why would one need to create a copy, or why it's important. Or probably it's so obvious you should not bother at all!)

Document what's surprising. Document "why" instead of "what". And don't just repeat yourself in comments.