C:\	
CD C:\PSIEMUL\S3A
				REM // Makes sure the command prompt 
				REM // is in the right drive and directory

@ECHO Creating virtual drives for Psion emulator
				REM // Echoes a message onto the screen

SUBST
				REM // Lists SUBSTituted drives
SUBST M: C:\PSIEMUL\S3A
				REM // Tells MS-DOS and emulator
				REM // to regard D:\PSIEMUL\S3A
				REM // as Drive M (Internal Psion
				REM // S3a drive)
SUBST A: C:\PSIEMUL
				REM // Tells MS-DOS and emulator
				REM // to regard D:\PSIEMUL
				REM // as Drive A (Psion SSD
				REM // drive)

SUBST B: C:\PSIEMUL
				REM // Tells MS-DOS and emulator
				REM // to regard D:\PSIEMUL
				REM // as Drive B (Psion SSD
				REM // drive)

C:\PSIEMUL\S3A\S3AEMUL.EXE
				REM // This runs the emulator

@ECHO Deleting virtual drives and returning PC to normal
				REM // Echoes a message onto the screen

SUBST M:/D
SUBST A:/D
SUBST B:/D
				REM // The /d switch after SUBST
				REM // deletes the SUBSTituted
				REM // drive
				
SUBST
				REM // SUBST on its own lists
				REM // any SUBSTituted drives
				REM // This is to let you see if
				REM // they have all been deleted

C:\
CD C:\