виртуальный файл(A file name within the virtual environment that is mapped to an alternate target location. A virtual file appears alongside other files in the containing directory, regardless of whether that directory is virtual or local)
виртуальная файловая система(The subsystem that intercepts and redirects file system requests from application processes running in a virtual environment. These requests are processed based on the virtual files and directories defined in the application package and created or modified through interaction with a virtual application)