One year ago, I added to the sandbox the following type_traits: - is_equal_to_comparable, - is_greater_comparable, - is_greater_equal_comparable, - is_less_comparable, - is_less_equal_comparable, - is_not_equal_to_comparable

They allow to check if type T can be compared, i.e. if operator==, >,

...

=, <, <=, !=(T&, T&) exist. At that time, I could not build the documentation so the addition has never been reviewed.

I have now a larger hard disk which allows me to have a virtual machine running linux (ubuntu). I would like to check if my documentation addition is OK, therefore could you tell me how I can compile .qbk files?

Try this page: https://svn.boost.org/trac/boost/wiki/BoostDocs/GettingStarted for an overview of setting up the toolchain on Windows or Linux, and for how to check that it's working correctly. Then cd into libs/type_traits/doc and do a: bjam There may be some complications building in the sandbox rather than the Trunk but ping me if that's the case.

Then, I would like to submit the addition for a review and future inclusion in a boost release; what is the procedure?

Just ask :-) It helps if the docs are readily viewable over the web though. Welcome back and thanks for not forgetting about these! John.