The following subchapter isn't one you have to go through step by step; it's rather a collection of small features that you can use to improve your concrete5 theme or block. The code snippets won't have any purpose in the upcoming chapters; you can implement them if you like, but you don't have to.

By default, concrete5 sets a bunch of constants that you can use when you create a theme but also a block or any other type of add-on. Most of them aren't really useful, they are needed by concrete5 within the core, but some are necessary and the rest give you an impression about a few internal aspects of concrete5. There are also lots of functions, some of them quite handy when you work within a theme template.

While the basic template we've created works well for most situations, there are several things you can do within a template and not only in the user interface. The code lines aren't real life examples; they just give you a hint about things you can do once you...