Apple Mac OS 7.6 - Manual (Page 36)

Better performance when using virtual memory
With virtual memory, you can use available hard disk space as if it were
random-access memory (RAM). In Mac OS 7.6, virtual memory is
significantly faster than in previous versions.
The new virtual memory improves on previous versions in the time it
takes to
m open an application program that requires a significant amount of
memory (RAM)
m switch between memory-intensive application programs
m switch between large documents within an application
m access SCSI devices
Mac OS 7.6 automatically turns on virtual memory when you install it.
36 Chapter 2