[boost] [doc] General Boost documentation suggestion

This is an impassioned plea for all library developers writing documentation about classes and/or functions ( including class templates and function templates ). Please, please put somewhere in the low-level description/explanation of that class and function both the full namespace it is in and the header file which must be included. Numerous times, using the functionality of an otherwise wonderful Boost library, I have had to hunt through the rest of that library's documentation to find the full namespace and header file which must be included in order to correctly use a particular function or class. This is irritatingly time consuming and can be remedied in all cases by the suggestion above. Thank you !