Just posted this to my Liferay blog.
If you’ve been using the Liferay CMS, you are probably familiar with a journal article’s Categorization tab wherein you can specify the tags and the categories for the journal article. If you aren’t familiar with those terms, you should read up on Categorization. Tags and categories are indispensable to a well-defined content architecture, apart from being the most convenient way to organize your content. More here:The rest of this article assumes you are familiar with content categories. One little feature of categories that you may not be aware of is that a category can have one or more properties tied to it. If you knew about that already, you can safely skip this post and save yourself the 15 minutes it will take to read. But if you didn’t know that, or you did but never really dug into it, read on.