Drupal placeholder/token replacement system.
API functions for replacing placeholders in text with meaningful values.
For example: When configuring automated emails, an administrator enters standard text for the email. Variables like the title of a node and the date the email was sent can be entered as placeholders like [node:title] and [date:short]. When a Drupal module prepares to send the email, it can call the Token::replace() function, passing in the text. The token system will scan the te