Hey Robs,
do you mind doing a little beta testing for me?
You'll find a new version of the module at
http://www.pierstorff.com/joomla/mod_contentitem.zip.
There is a new parameter called "Merge Item". Like the name says it merges multiple content items into one, so you can make a pdf from multiple items at once (you have to set the parameter "show pdf button" to "yes" of course").
I'm afraid this is a bit of an ugly hack. The pdf function does not convert the screen output to pdf but it takes an id for a content item, retrieves that item from the database and outputs it as pdf. So to output the merged items as pdf I have to create a temporary content item first from the merged items. The module starts by dropping all previous temporary items which is a bit errorprone if many people use your site at once.
I'm afraid the print button doesn't work for merged items (and it will not be displayed in mgered view even if set to yes in parameters), but pdf support is still better than nothing I guess.
This worked for me on a local installation of Joomla 1.0.8. I have no idea how it will behave "in the wild".
If it doesn't work for you can write me or file a big report at
http://www.pierstorff.com/bugtracker (you have to choose the project "mod_contentitem" from the dropdown on the right. The Bugtracker is german by default aber soweit ich weiß ist das ist für dich kein Problem. To change the language you will have to register.)
In the Joomla database the fulltext field for content items is set up as "mediumtext". I don't know how many characters a mediumtext-Field can hold but if you merge to many articles a part will get cut off.
I will be pretty busy the next week so there will be no quick bugfixes but I still would like to hear bug reports and feature requests (and I promise I'll clean up the code, it's a bit messy at the moment).
-- eike