I was looking to see if boost had a disjoint integer set library but did not see it in the documentation. Then I did a search of the boost site using the search box, looking for "disjoint" and was surprised to find some documentation of boost/disjoint_sets.hpp. On doing further poking around I found this code in the boost/pending directory. This then lead me to wonder what the status of things in the pending directory was. I had previously noticed that Boost.Graph references some things in the pending directory. So I then did a search of "pending" in the boost site to see if there was any stated policy regarding putting things in the pending. I did not find any. Can someone explain the use of pending and the likelihood that things there will make it into the official part of boost? I did find one archived mail message that mentioned things languishing in the pending directory. Are interested parties encouraged to take things in the pending directory, enhance them, then submit them? But if they were not previously approved, how did they get into boost at all? One result of the search was that I found http://www.boost.org/more/int_const_guidelines.htm which recommends that the header <limits> never be included, but that <boost/pending/limits.hpp> be included instead. On looking at the sources I now see that limits.hpp is found in <boost/limits.hpp> and is no longer in the pending directory. It would be helpful if someone with the rights to edit this web page updated it.