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We're keeping this page up as a courtesy to folks who may need to refer to old instructions. We don't plan to update this page.
Tokens are simple strings of text that serve as placeholders for a dynamic value. This is such a common task for modules that, rather than have every module developer reinvent the wheel, Drupal's token API allows for this kind of placeholder replacement using a unified syntax and a set of hooks and functions, which we'll cover throughout the series.
This video gives an overview of the six lessons in this series, from background to a sample installation of modules we’ll need, implementing tokens using hooks, and looking at the relationships between core and token modules.
After watching this series, you should have a firm grasp on the Drupal token API and be able to use it in your own custom modules in order to provide your users with static placeholder tokens that can be replaced with a dynamically calculated value.