Relative Date Queries

Is there any way to establish a date query relative to the current date? 
I understand I can query with an expression that includes an explicit 
date, but such queries make little sense when saved.

For example, I might wish to see every PR that arrived today. If I 
construct a query using today's date and save it (using the Gnatsweb 
"cookie" feature), I can't use the same query tomorrow to show me the 
PRs that arrived that day. Instead, I have to construct a new query each 
day.

I'd like to be able to specify a date like -5 -- meaning five days prior 
to today (-0 would mean today).

-- 
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| Edward E. Jaffe                |                                |
| Mgr, Research & Development    | [email protected]    |
| Phoenix Software International | Tel: (310) 338-0400 x318       |
| 5200 W Century Blvd, Suite 800 | Fax: (310) 338-0801            |
| Los Angeles, CA 90045          | http://www.phoenixsoftware.com |
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