Fields are the placeholders that store your client and matter specific information used by your templates. You can add hints to your fields to provide more context on the purpose or use of the information, as well as the necessary format of the data.
Common Uses for Hints
Lend a Helping Hand with a Hint
Often the field names will be self-explanatory and hints are not necessary. But the best practice is to include a hint if you think it could help someone else when going through the Journey and generating documents with the template.