So, while we might be able to cram every project, we and all our neighbors for a forty mile radius might be working on at any one time, it is not always a good idea. Believe me, if you're involved in the production of a project of any reasonable length, even just writing the script, the research, plot notes, character lists, and much more will grow pretty quickly. So, it's simply good practice to restrict a project container to material relating to a single project.

The good thing is Celtx allows us to stack projects as high as our computers can reach (which is usually darn high). In other words, the only limit is the hard disk space.

While it's not necessary to have more than one project open at a time, we can do it. The following screenshot shows four Celtx projects open on my computer. At the same time Firefox is running, a couple of chapters are open in Word, and a Lightwave animation rendering in the background:

With multiple projects...