>The ability to dock the Command and Data Sessions windows and select using tabs is an absolutely fantastic "ease of use" feature.

Docking has another side benifit, the windows can float outside of VFP's borders. Typically, this isn't that useful, but I have two monitors setup, so VFP is on one monitor, my command window/properties sheet/document view/ect and debugger or on antoher. Nifty setup.