Intermec PENKEY 6100 Programmer's Reference Manual page 300

Common PEN*KEY 6000 Series Information
BIOS
DOS Device Drivers
R
B-20 PEN*KEY 6100 Computer Programmer's Reference Guide
Applications
DLLs INIs APIs
Minimal Windows System Files
Windows Drivers
BIOS
Hardware
Additional Handwriting
Windows Recognition
Files
(optional)
Pen Windows
DOS
DOS Drivers
upstream
device driver
APPENDIX B