Is it possible to parse but hide fields

If I manually parse a field and then specify it with the "fields" operator, it shows up in the results, obviously.  But if I omit it from the "fields" operator, then it doesn't show up in the left field navigator.

As I have a lot of fields in my query, many of which are only of interest to certain people in certain situations, I'd like to parse the field but have it show up on the left in "Hidden Fields", so people can show it on demand.  Is this possible?