A 3D environment you can interact with, like reality - but virtual.

adobe acrobat

In case of simple paging all pages should be in main memory to run a process..while in case of virtual memory paging pages can be loaded as needed by the processor i.e. called demand paging...

The easiest way to come up with new virtual names is to randomize a name machine, and let that make a simple name for you. Virtual names are easy to make up so anything is possible.

The simple answer is: You don't - you let Windows decide how and when to use it. That's the way the OS is designed.