NEC SILENTWRITER SUPERSCRIPT 660 User Manual page 216

10–36 Troubleshooting
If Windows does not let you allocate the required
amount of space, check to make sure you have
enough room on your hard disk drive. If you have
enough free disk space and Windows won't let you
create large enough permanent virtual memory, you
may need to run a disk defragmentation utility, such
as Norton Utilities sd, to clean up your hard disk
drive, before changing your virtual memory to
permanent. In the mean time you can use temporary
virtual memory instead of permanent.
NOTE: For more information on virtual memory in
Windows, refer to the Microsoft Windows 3.1 User
Guide.