Kenneth offered to move the session info from ref.session to features.session. The intention so far was to work the other way around (and provide compact and all-in-one reference sections). See the preg section for example. It contains info on preg formatting. Though regular expressions would be a possible feature section cadidate, we decided to keep the documentation for one extension in one place.

This does not mean that pointers might not be added to the features section (short pages on regex extensions or session handling). But I am strongly opposed to the idea to move out stuff from the reference sections to the features section, since we have worked the other way around so far. There used to be an image generation section in the features part which we moved to the gd docs for example...

[Kenneth, it is better to store comments in the bug system for future reference...]

I agree with Goba (infos compact and all-in-one reference 
sections). 
Although a short introduction to sessions as core feature 
of php might be feasible. 
 
Friedhelm 
 

I just wanted a short tutorial like introduction, similar to what we have for file uploads. All other information for this is in the manual too, but not grouped in any way. Moving the session stuff to the features section is not a good idea IMO.

Ok, That's fine.  I wanted to check before I did anything.

This bug has been fixed in the documentation's XML sources. Since the
online and downloadable versions of the documentation need some time
to get updated, we would like to ask you to be a bit patient.

Thank you for the report, and for helping us make our documentation better.

As everything is in ref.session, I add only very short intro to Features with link to Reference.