When was that added to VFP?

I work with other developers at my clients and mentor several developers on a regular basis. It is not unusual for developers to ask me the question "When was that added to VFP?" I am finding it harder and harder to recall the details off the top of my head with so many versions of VFP.

This morning over on FoxForum a developer who is getting back into VFP development wanted to find out how he could go through a history of VFP to see what new features were added since VFP 6. Naturally I wanted to answer this information is in the VFP Help file in the What's New section, but he last developed in VFP 6 and now owns a copy of VFP 9, so access to the 7 and 8 Help files is not on his machine.

Then I recalled the VFP Help files are online on the Microsoft MSDN site. Each version has a separate page:

What's New in VFP 9
What's New in VFP 8
What's New in VFP 7
What's New in VFP 6 (not found)
What's New in VFP 5

This is a great way for developers who skipped upgrading to each version to find out all the features which are new to them. Unfortunately I could not find what's new in 6, but I am guessing it is out there.

The definitive guide for me is the Hacker's Guide to Visual FoxPro 6 and Hacker's Guide to Visual FoxPro 7, but unfortunately there is no 8 or 9 in this series. I am also a fan of the What's New in VFP 7, 8, and 9 as well. I use these books along with the Help files to understand which versions of VFP I can support for the developers tools I have published. I find it easier to look up a command in the various resources than to find it breaks when I perform system testing for the developer tool in each version of VFP I plan to support.