15 - Microsoft TSR Specification
 1500 - CASSETTE - TURN ON TAPE DRIVE'S MOTOR (PC and PCjr only)
 1500 - Amstrad PC1512 - GET AND RESET MOUSE COUNTS
 1500 - VMiX v2+ - INSTALLATION CHECK???
 1500 - MultiDOS Plus - GIVE UP TIME SLICE
 1501 - CASSETTE - TURN OFF TAPE DRIVE'S MOTOR (PC and PCjr only)
 1501 - Amstrad PC1512 - WRITE DATA TO NON-VOLATILE RAM
 1501 - VMiX - I/O CHANNEL OBJECT MANAGER
 1501 - MultiDOS Plus - REQUEST RESOURCE SEMAPHORE
 1502 - CASSETTE - READ DATA
 1502 - Amstrad PC1512 - READ DATA FROM NON-VOLATILE RAM
 1502 - VMiX - MEMORY OBJECT MANAGER
 1502 - MultiDOS Plus - RELEASE RESOURCE SEMAPHORE
 1503 - CASSETTE - WRITE DATA (PC and PCjr only)
 1503 - Amstrad PC1512 - WRITE VDU COLOR PLANE WRITE REGISTER
 1503 - VMiX - PROMPTED CONSOLE INPUT
 1503 - MultiDOS Plus - SUSPEND TASK FOR INTERVAL
 1504 - SYSTEM - BUILD ABIOS SYSTEM PARAMETER TABLE (PS)
 1504 - Amstrad PC1512 - WRITE VDU COLOR PLANE READ REGISTER
 1504 - VMiX - VPRINTF
 1504 - MultiDOS Plus - SEND MESSAGE TO ANOTHER TASK
 1505 - SYSTEM - BUILD ABIOS INITIALIZATION TABLE (PS)
 1505 - Amstrad PC1512 - WRITE VDU GRAPHICS BORDER REGISTER
 1505 - VMiX - GET PROCESS ID OF CURRENT PROCESS
 1505 - MultiDOS Plus - CHECK MAILBOX
 1506 - Amstrad PC1512 - GET ROS VERSION NUMBER
 1506 - VMiX - GET POINTER TO PROCESS CONTROL BLOCK
 1506 - MultiDOS Plus - READ MAILBOX
 1507 - VMiX - GET POINTER TO OBJECT CONTROL BLOCK
 1507 - MultiDOS Plus - SPAWN INTERNAL TASK (CREATE NEW THREAD)
 1508 - VMiX - GET CHANNEL CONTROL BLOCK
 1508 - MultiDOS Plus - TERMINATE INTERNAL TASK (KILL THREAD)
 1509 - VMiX - GET ID OF QUEUED ELEMENT
 1509 - MultiDOS Plus - CHANGE TASK'S PRIORITY
 150A - VMiX - GET ID OF NEXT QUEUED ELEMENT
 150A - MultiDOS Plus - CHANGE TIME SLICE INTERVAL
 150B - VMiX - GET TOTAL NUMBER OF ACTIVE PROCESSES
 150B - MultiDOS Plus - FORCE DISPLAY OUTPUT TO PHYSICAL SCREEN MEMORY
 150C - VMiX - GET POINTER TO PROCESS TSS STACK
 150C - MultiDOS Plus - RESTORE OLD VIDEO DISPLAY MEMORY
 150D - VMiX - START A CHILD PROCESS JOB SHELL
 150D - MultiDOS Plus - DISABLE MULTITASKING
 150E - VMiX - TERMINATE PROCESS
 150E - MultiDOS Plus - ENABLE MULTITASKING
 150F - SYSTEM - FORMAT UNIT PERIODIC INTERRUPT (PS ESDI drives only)
 150F - VMiX - GET KEY FIELD OF QUEUED ELEMENT
 150F - MultiDOS Plus - EXECUTE A MULTIDOS PLUS COMMAND
 1510 - VMiX - EXECUTE FUNCTION IN PROTECTED MODE
 1510 - MultiDOS Plus - TEST RESOURCE SEMAPHORE
 151000 - TopView - "PAUSE" - GIVE UP CPU TIME
 151001 - TopView - "GETMEM" - ALLOCATE "SYSTEM" MEMORY
 151002 - TopView - "PUTMEM" - DEALLOCATE "SYSTEM" MEMORY
 151003 - TopView - "PRINTC" - DISPLAY CHARACTER/ATTRIBUTE ON SCREEN
 1510 - TopView - UNIMPLEMENTED IN DV 2.x
 151013 - TopView - "GETBIT" - DEFINE A 2ND-LEVEL INTERRUPT HANDLER
 151014 - TopView - "FREEBIT" - UNDEFINE A 2ND-LEVEL INTERRUPT HANDLER
 151015 - TopView - "SETBIT" - SCHEDULE ONE OR MORE 2ND-LEVEL INTERRUPTS
 151016 - TopView - "ISOBJ" - VERIFY OBJECT HANDLE
 151017 - TopView - UNIMPLEMENTED IN DV 2.x
 151018 - TopView - "LOCATE" - FIND WINDOW AT A GIVEN SCREEN LOCATION
 151019 - TopView - "SOUND" - MAKE TONE
 15101A - TopView - "OSTACK" - SWITCH TO TASK'S INTERNAL STACK
 15101B - TopView - "BEGINC" - BEGIN CRITICAL REGION
 15101C - TopView - "ENDC" - END CRITICAL REGION
 15101D - TopView - "STOP" - STOP TASK
 15101E - TopView - "START" - START TASK
 15101F - TopView - "DISPEROR" - POP-UP ERROR WINDOW
 151020 - TopView - UNIMPLEMENTED IN DV v2.00+
 151021 - TopView - "PGMINT" - INTERRUPT ANOTHER TASK
 151022BX0000 - TopView - "GETVER" - GET VERSION
 151023 - TopView - "POSWIN" - POSITION WINDOW
 151024 - TopView - "GETBUF" - GET VIRTUAL SCREEN INFO
 151025 - TopView - "USTACK" - SWITCH BACK TO USER'S STACK
 1510 - DESQview (TopView???) - UNIMPLEMENTED IN DV 2.x
 15102B - DESQview v2.00+ (TopView???) - "POSTTASK" - AWAKEN TASK
 15102C - DESQview v2.00+ - "NEWPROC" - START NEW APPLICATION IN NEW PROCESS
 15102D - DESQview v2.00+ - "KMOUSE" - KEYBOARD MOUSE CONTROL
 15102E - DESQview v2.40 - ALLOCATE ??? MEMORY
 1511 - TopView commands
 1511 - VMiX - EXECUTE SHELL SYSTEM COMMANDS
 1511 - MultiDOS Plus - TURN OFF AltZ TOGGLE
 151117BX0000 - DESQview v2.20+ - "ASSERTMAP" - GET/SET MAPPING CONTEXT
 1511DE - DESQview - QEXT.SYS - INSTALLATION CHECK
 1512 - VMiX - PUT PROCESS TO SLEEP
 1512 - MultiDOS Plus - TURN ON AltZ TOGGLE
 1512 - TopView - SEND MESSAGE - "HANDLE" - RETURN OBJECT HANDLE
 1512 - TopView - SEND MESSAGE - "NEW" - CREATE NEW OBJECT
 1512 - TopView - SEND MESSAGE - "FREE" - FREE AN OBJECT
 1512 - TopView - SEND MESSAGE - "ADDR" - GET HANDLE OF MESSAGE SENDER
 1512 - DESQview v2.26+ - "CONNECT" - CONNECT TWO WINDOWS
 1512 - TopView - SEND MESSAGE - "DIR" - GET PANEL FILE DIRECTORY
 1512 - TopView - SEND MESSAGE - "READ" - READ NEXT LOGICAL LINE OF WINDOW
 1512 - TopView - SEND MESSAGE - "READ" - GET NEXT RECORD FROM OBJECT
 1512 - TopView - SEND MESSAGE - "READ" - WAIT FOR TIMER TO EXPIRE
 1512 - TopView - SEND MESSAGE - "APPLY" - WRITE PANEL TO WINDOW
 1512 - TopView - SEND MESSAGE - "WRITE" - WRITE TO OBJECT
 1512 - TopView - SEND MESSAGE - "WRITE" - WRITE STRING TO WINDOW
 1512 - TopView MODE 00
 1512 - TopView MODE 01...
 1512 - DESQview 2.20+ - SEND MESSAGE - "SETPRI" - SET PRIORITY WITHIN OBJECTQ
 1512 - DESQview 2.20+ - SEND MESSAGE - "GETPRI" - GET PRIORITY WITHIN OBJECTQ
 1512 - TopView - SEND MESSAGE - "SIZEOF" - GET OBJECT SIZE
 1512 - TopView - SEND MESSAGE - "LEN" - GET OBJECT LENGTH
 1512 - TopView - SEND MESSAGE - "ADDTO" - WRITE CHARS AND ATTRIBS TO WINDOW
 1512 - TopView - SEND MESSAGE - "ADDTO" - SEND MAILBOX MESSAGE/STAT BY VALUE
 1512 - TopView - SEND MESSAGE - "ADDTO" - SET OBJECT BITS
 1512 - TopView - SEND MESSAGE - "SUBFROM" - WRITE ATTRIBUTES TO WINDOW
 1512 - TopView - SEND MESSAGE - "SUBFROM" - SEND MAILBOX MESSAGE/STAT BY REF
 1512 - TopView - SEND MESSAGE - "SUBFROM" - REMOVE OBJECT FROM OBJECTQ
 1512 - TopView - SEND MESSAGE - "SUBFROM" - RESET OBJECT BITS
 1512 - TopView - SEND MESSAGE - "OPEN" - OPEN OBJECT
 1512 - TopView - SEND MESSAGE - "CLOSE" - CLOSE OBJECT
 1512 - TopView - SEND MESSAGE - "ERASE" - ERASE OBJECT
 1512 - TopView - SEND MESSAGE - "STATUS" - GET OBJECT STATUS
 1512 - TopView - SEND MESSAGE - "EOF" - GET OBJECT EOF STATUS
 1512 - TopView - SEND MESSAGE - "AT" - POSITION OBJECT CURSOR
 1512 - TopView - SEND MESSAGE - "SETNAME" - ASSIGN NAME TO MAILBOX
 1512 - TopView - SEND MESSAGE - "SETSCALE" - SET POINTER SCALE FACTOR
 1512 - TopView - SEND MESSAGE - "READN" - GET NEXT N OBJECT BYTES
 1512 - DESQview 2.50+ - SEND MESSAGE - "GETNAME" - GET NAME OF MAILBOX
 1512 - TopView - SEND MESSAGE - "GETSCALE" - GET POINTER SCALE FACTOR
 1512 - TopView - SEND MESSAGE - "REDRAW" - REDRAW WINDOW
 1512 - DESQview 2.50+ - SEND MESSAGE - "READINTO" - GET NEXT MAIL MESSAGE
 1512 - TopView - SEND MESSAGE - "SETICON" - SPECIFY POINTER ICON
 1512 - TopView - SEND MESSAGE - "SETESC" - SET ESCAPE ROUTINE ADDRESS
 1512 - TopView - SEND MESSAGE - "LOCK" - REQUEST EXCLUSIVE ACCESS TO RESOURCE
 1512 - DESQview v2.20+ - SEND MESSAGE - "SETFLAGS" - SET OBJECT FLAGS
 1512 - DESQview v2.20+ - SEND MESSAGE - "GETFLAGS" - GET OBJECT FLAGS
 1512 - DESQview v2.42-2.52 - BUG
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1512 - DESQview v2.50+ - SEND MESSAGE WITH ERROR RECOVERY
 1513 - VMiX - WAKE PROCESS
 1513 - MultiDOS Plus - GET TASK CONTROL BLOCK