I stumbled into the Library Archive while browsing for information on Mathematica with Windows 10. When I looked at a number of the MathSource entries it appeared that most, if not all, of the submissions had revision dates between 10 and 20 years old. I know that the functionality of Mathematica has significantly increased over the years and I am wondering how many of the solutions in the library are now included in Mathematica. If Mathematica now has the capability provided by a submission, perhaps the submission could be deleted or annotated with a comment that the capability is provided in Mathematica versions X and above.