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                             FOR INTERNAL USE ONLY

              Copyright (c) 1986 by Digital Equipment Corporation

 The information in this document is subject to change without notice and
 should  not be construed as a commitment by Digital Equipment Corporation.
 Digital Equipment Corporation assumes no responsibility for any errors that
 may occur in this document.

 This specification does not describe any program or product which is currently
 available from Digital Equipment Corporation. Nor does Digital Equipment
 Corporation commit to implement this specification in any product or program.
 Digital Equipment Corporation makes no commitment that this document
 accurately describes any product it might make.

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 	The WATCHPOINT UTILITY is an Internal Use Only debugging tool that
 	maintains a history of modification that are made to a particular
 	location in shared system space.   The WATCHPOINT command
 	interpreter (WP) issues $QIO request to the WATCHPOINT driver
 	(WPDRIVER) from commands that follow the standard rules of DCL
 	grammar.

 	Commands may be entered at the watchpoint> prompt to set, delete,
 	and obtain information from watchpoints.

 	Before invoking the WATCHPOINT command interpreter (WP), or
 	loading the WATCHPOINT driver one must first set the SYSGEN
 	MAXBUF dynamic parameter to 64000.  This can be accomplished
 	as follows:

 	$ RUN SYS$SYSTEM:SYSGEN
 	SYSGEN> SET MAXBUF 64000
 	SYSGEN> WRITE ACTIVE
 	SYSGEN> WRITE CURRENT
 	SYSGEN> EXIT

 	Before invoking the WATCHPOINT command interpreter (WP), the
 	WATCHPOINT driver (WPDRIVER), must first be installed with SYSMAN.
 	This can be accomplished as follows:

 	$ RUN SYS$SYSTEM:SYSMAN
 	SYSMAN> IO CONNECT WPA0/DRIVER=SYS$WPDRIVER/NOADAPTER
 	SYSMAN> EXIT

 	The WATCHPOINT command interpreter (WP) can then be invoked with the
 	command:

 	$ RUN SYS$SYSTEM:WP

 	Commands may then be entered at the watchpoint> prompt to set,
 	delete,and obtain information from Watchpoints.

 	Some of the WP help screens as well as the output to the WP Utility
 	are best viewed using a terminal with a character width of 132.
 	This can be accomplished as follows:

 	$ SET TERM/WID=132