In the dusty digital archives of software history, few artifacts carry the specific, utilitarian mystique of the "Portable" version of Visual FoxPro 7. It is not an official release from Microsoft—Redmond never sold a version of their database development environment meant to run from a USB stick. Instead, the is a creature of the community, a hack born of necessity and affection.
However, if you are looking for technical documentation or an overview paper regarding Visual FoxPro 7 (VFP 7), the primary reference is the Microsoft product documentation and white papers released around 2001.
For VFP 7, you cannot legally or practically achieve this with the full IDE. However, you run your compiled VFP applications ( .exe ) portably, or use a minimal runtime environment.