Have you ever looked a calculation in a query and wondered why on earth it was done that way? Or why certain criteria have been included in a CASE statement? If you think that's likely to happen it's a good idea to add a comment to the field / calculation to help your future self.
You can do this by wrapping a comment in #/* markers within the field definition in Report Studio. So your field definition could end up looking something like this:
You can do this by wrapping a comment in #/* markers within the field definition in Report Studio. So your field definition could end up looking something like this: