Looks like there's no other way but to rename the file which now happens to be called '600+.shtml' into '600plus.shtml' and update the links to it.
... and that's why g1 is always telling people to put the more specific rules before the more general. And it illustrates something I said in another thread just a few days ago: sometimes you have to put an individual Redirect before your Gone rules so it gets picked up in the right place.
Here, all you need to do is make a separate Rule addressing that one page, and then let your generic [G] rule pick up all the others. In the long term this is good, because the + should never have been there anyway ;)
If I cut-and-paste something containing spaces directly into Camino's address bar, the spaces will be quietly eaten. This can sometimes be useful, because I may have put in the spaces myself to work with the URL.
You should read RFC 2616, the HTTP/1.1 specification.
Funny you should say that. I was there-- or somewhere similar-- just yesterday because of this very thread :)