I want to write a helper function available to my site templates, to help me integrate with a third-party service. I've written the function to work on the data, and I know how to call it from a template.
How do I package that function up into the right files inside my XF install so that the template language can pick it up? Do I have to register the function anywhere so that XF knows its available to my templates?
Just looking to tie it all together now really.
Thanks in advance for any and all help, and sorry for the newbie question!