Cross-Dialect Templates

TT2 can INCLUDE TT3 templates
...and vice versa
...they can both call BBCode templates
...or any other dialects

Thus Spake Andy:

We have dialect independence at the template level. Which is a fancy way of saying that your TT2 templates can include TT3 templates, and vice versa. You no longer have to pick one template language for a whole project. You can use several dialects, either to help in the transition from TT2 to TT3 (or between any other dialects), or because you've got different requirements for different parts of your site.