Because messages sent in different contexts need different information to be meaningful, each message also has access to more specific tokens.
Take the message sent when a new client submited a form on your company website, for instance. It includes tokens that allow you to include you company name, youe sales person contact details and signature, also, the client's name, and a link to your website or some relevant landing page.
You will see the Dropdown named Useful Shortcuts in all message fields for Emaills:
Also, for Emai Triggers:
Or for SMS Triggers:
Those you need to set up prior to building the up into a sequence to use for automating your marketing efforts.