[boost] <iostream> and std::endl

From: Jens Müller (jens.mueller_at_[hidden])
Date: 2006-10-12 07:18:29

progress.hpp uses std::endl and includes only <iostream>

I read the following at 
http://groups.google.com/group/comp.lang.c++/browse_thread/thread/ef96516cd91b8ee1/6a50ad170b176f50?lnk=st&q=iostream+endl&rnum=1#6a50ad170b176f50 

"Note: while most implementations will work without it,
the declaration for 'endl' is provided by <ostream>.
It is allowed to be, but not required to be, provided by
  <iostream>.  'endl' is also in namespace 'std'.  (Its
'full name' is 'std::endl')"

Shouldn't <ostream> be included?