diff --git a/Source/Doc/ROM_Applications.md b/Source/Doc/ROM_Applications.md
index 3a260183..9ff7c322 100644
--- a/Source/Doc/ROM_Applications.md
+++ b/Source/Doc/ROM_Applications.md
@@ -45,33 +45,54 @@ for testing and programming. It allows programs to be entered,
 memory to be examined, and input/output devices to be read or
 written to.
 
-It's key advantage is that is available at boot up.
+It's key advantage is that is available at boot up. 
+
+Its key disadvantages are that code cannot be entered in assembly language 
+and there is no ability to save to memory devices.
+
+The available memory are for programming is `0200-EDFFh`.  The following areas are reserved:
+
+Memory Area | Function
+------------|-----------------------------------
+`0000-00FFh`| Jump and restart (RST) vectors
+`0100-01FFh`| HBIOS configuration block
+`FE00-FFFFh`| HBIOS proxy
+
+Commands can be entered at the command prompt `>` 
+Automatic case conversion takes place on command entry and all arguments are expected to be in hex format.
+
+The current memory bank in low memory is displayed before the prompt i.e.:
+
+`8E>`
+
+Refer to the RomWBW Architecture manual for details memory banking.
 
 A quick guide to using the Monitor program follows:
 
 ## ? - Displays a summary of available commands.
 
 ```
-Monitor Commands (all values in hex):`
-B                - Boot system`
-D xxxx yyyy      - Dump memory from xxxx to yyyy`
-F xxxx yyyy zz   - Fill memory from xxxx to yyyy with zz`
-H                - Halt system`
-I xxxx           - Input from port xxxx`
-K                - Keyboard echo`
-L                - Load Intel hex data`
-M xxxx yyyy zzzz - Move memory block xxxx-yyyy to zzzz`
-O xxxx yy        - Output value yy to port xxxx`
-P xxxx           - Program RAM at address xxxx`
-R xxxx           - Run code at address xxxx`
-S xx             - Set bank to xx`
-X                - Exit monitor`
+Monitor Commands (all values in hex):
+B                    - Boot system
+D xxxx yyyy          - Dump memory from xxxx to yyyy
+F xxxx yyyy zz       - Fill memory from xxxx to yyyy with zz
+H                    - Halt system
+I xxxx               - Input from port xxxx
+K                    - Keyboard echo
+L                    - Load Intel hex data
+M xxxx yyyy zzzz     - Move memory block xxxx-yyyy to zzzz
+O xxxx yy            - Output value yy to port xxxx
+P xxxx               - Program RAM at address xxxx
+R xxxx [[yy] [zzzz]] - Run code at address xxxx
+                       Pass yy and zzzz to register A and BC
+S xx                 - Set bank to xx
+X                    - Exit monitor
 ```
 
 ## Cold Boot
 
 B - Performs a cold boot of the ROMWBW system. A complete
-reinitialization of the system is performed and the system
+re-initialization of the system is performed and the system
 returns to the Boot Loader prompt.
 
 ## Dump Memory
@@ -160,10 +181,19 @@ Use clip leaded LEDs to confirm the data written.
 ## Program memory location
 
 P xxxx - Program memory location xxxx. This routine will
-allow you to program a hexidecimal into memory starting
+allow you to program a hexadecimal into memory starting
 at location xxxx. Press 'Enter' on a blank line to
 return to the Monitor prompt.
 
+## Run program
+
+R xxxx [[yy] [zzzz]] - Run program at location xxxx. if optional
+arguments yy and zzzz are entered they are loaded into the
+A and BC register respectively. The return address of the
+Monitor is saved on the stack so the program can return
+to the monitor. On return to the monitor, the contents of
+the A, HL, DE and BC registers are displayed.
+
 ## NOTES:
 
 The Monitor allows access to all memory locations. ROM and
@@ -187,4 +217,4 @@ and then run RTC to see the options list.
 
 # Network Boot
 
-# ZModem Flash Update
\ No newline at end of file
+# ZModem Flash Update
diff --git a/Source/HBIOS/dbgmon.asm b/Source/HBIOS/dbgmon.asm
index 4b8d512a..b4643e49 100644
--- a/Source/HBIOS/dbgmon.asm
+++ b/Source/HBIOS/dbgmon.asm
@@ -5,7 +5,7 @@
 ;  MODIFIED BY : 	DAN WERNER 03 09.2009
 ;
 ;__REFERENCES_________________________________________________________________
-; THOMAS SCHERRER BASIC HAR.DWARE TEST ASSEMBLER SOURCES FROM THE Z80 INFO PAGE
+; THOMAS SCHERRER BASIC HARDWARE TEST ASSEMBLER SOURCES FROM THE Z80 INFO PAGE
 ; INCLUDING ORIGINAL SCHEMATIC CONCEPT
 ; HTTP://Z80.INFO/Z80SOURC.TXT
 ; CODE SAMPLES FROM BRUCE JONES PUBLIC DOMAIN ROM MONITOR FOR THE SBC-200C
@@ -76,8 +76,8 @@ SERIALCMDLOOP:
 	LD	SP,MON_STACK		; RESET STACK
 	CALL	NEWLINE
 #IF (BIOS == BIOS_WBW)
-	LD	A,($FFE0)
-	CALL	PRTHEXBYTE
+	LD	A,($FFE0)		; DISPLAY CURRENTLY ACTIVE
+	CALL	PRTHEXBYTE		; BANK IN LOW MEMORY
 #ENDIF
 	LD	A,'>'
 	CALL	COUT
@@ -223,19 +223,44 @@ SETBNK:
 ;__RUN________________________________________________________________________
 ;
 ;	TRANSFER OUT OF MONITOR, USER OPTION "R"
-;	SYNTAX: R <ADDR>
+;	SYNTAX: R <ADDR> [<A-VALUE> [<BC-VALUE>]]
 ;_____________________________________________________________________________
 ;
 RUN:
 	CALL	WORDPARM		; GET START ADDRESS
 	JP	C,ERR			; HANDLE ERRORS
 	PUSH	DE			; SAVE VALUE
+	CALL	BYTEPARM		; GET OPTIONAL
+	PUSH	AF			; A REGISTER VALUE
+	CALL	WORDPARM		; GET OPTIONAL
+	PUSH	DE			; BC REGISTER VALUE
 	CALL	NONBLANK		; LOOK FOR EXTRANEOUS PARAMETERS
 	CP	0			; TEST FOR TERMINATING NULL
 	JP	NZ,ERR			; ERROR IF NOT TERMINATING NULL
+	POP	BC			; RECOVER BC REGISTER VALUE TO PASS
+	POP	AF			; RECOVER A REGISTER VALUE TO PASS
 	POP	HL			; RECOVER START ADDRESS
+;
+	LD	DE,PREG1		; SETUP A RETURN
+	PUSH	DE			; ADDRESS
+;
 	JP	(HL)			; GO
 ;
+PREG1:	PUSH	BC			; SAVE
+	PUSH	DE			; REGISTERS
+	PUSH	HL			; FOR DISPLAY
+;
+	CALL	NEWLINE
+	CALL	PRTHEXBYTE		; DISPLAY A
+	CALL	PC_SPACE		; REGISTER
+;
+	LD	B,3
+PREG2:	POP	HL			; DISPLAY
+	CALL	PHL			; HL DE BC
+	CALL	PC_SPACE		; REGISTER
+	DJNZ	PREG2
+	JP	SERIALCMDLOOP
+;
 ;__PROGRM_____________________________________________________________________
 ;
 ;	PROGRAM RAM LOCATIONS, USER OPTION "P"
@@ -253,11 +278,16 @@ PROGRM1:
 	POP	HL
 	PUSH	HL
 	CALL	PHL
-	CALL	PC_COLON
+	CALL	PC_COLON		; DISPLAY
+	CALL	PC_SPACE		; CURRENT
+	POP	HL			; VALUE
+	PUSH	HL
+	LD	A,(HL)
+	CALL	PRTHEXBYTE
 	CALL	PC_SPACE
-	LD	HL,KEYBUF
-	CALL	GETLN
-	LD	HL,KEYBUF
+	LD	HL,KEYBUF		; GET AND
+	CALL	GETLN			; SAVE NEW
+	LD	HL,KEYBUF		; VALUE
 	CALL	NONBLANK
 	CP	0
 	JP	Z,SERIALCMDLOOP
@@ -983,7 +1013,8 @@ TXT_HELP	.TEXT	"\r\nMonitor Commands (all values in hex):"
 		.TEXT	"\r\nM xxxx yyyy zzzz - Move memory block xxxx-yyyy to zzzz"
 		.TEXT	"\r\nO xxxx yy        - Output value yy to port xxxx"
 		.TEXT	"\r\nP xxxx           - Program RAM at address xxxx"
-		.TEXT	"\r\nR xxxx           - Run code at address xxxx"
+		.TEXT	"\r\nR xxxx [[yy] [zzzz]]  - Run code at address xxxx"
+		.TEXT	"\r\n                        Pass yy and zzzz to register A and BC"
 		.TEXT	"\r\nS xx             - Set bank to xx"
 		.TEXT	"\r\nX                - Exit monitor"
 		.TEXT	"$"