1 CHANGE
Changes the default device  and/or  directory  name  for  the  current
process.    The   new  default  is  applied  to  all  subsequent  file
specifications that do not explicitly give a device or directory name.

CHANGE is functionally like SET DEFAULT, but is easier to use.

Format:

	$ CHANGE device:directory

The device is optional.  Default is current default or as specified by
SEARCH_LIST (See below). 

The directory specification is optional and does not require [ ].  Full
wild carding may be used in the directory spec. 

If no parameters are specified, changes to your login directory.
2 device
Device names are terminated with a :

If device is a logical name, it will be translated (unlike SET DEFAULT).
Concealed device names are not translated. 

The : is not required after a logical name (Such as SYS$MANAGER).  The :
is provided by the logical name translation.

If the device is omitted, CHANGE tries to keep the current default. If
the requested directory doesn't exist on this device, CHANGE tries all
the devices defined with the SEARCH_LIST symbol. 
2 directory
The directory spec is a standard VMS spec (with some additions).

Either or both brackets ([ and ]) may be omitted.
	[DEMO] or DEMO or [DEMO or DEMO]

- is standard VMS for moving up a level.

+ may be used instead of - (- at end of line confuses DCL)
	+ means up one level, +.SRC means up & down, ++ is up 2...

.. may be used instead of -
	.. means up one level, ..SRC means up & down

... is standard VMS format (Down any number of levels)
2 Examples
$ CHANGE			(Return to SYS$LOGIN)

$ CHANGE DSKC:BOZO.SUB	(Set Default DSKC:[BOZO.SUB]

$ CHANGE --.TEST		(Move up 2 levels, then down
				into subdirectory TEST)

$ CHANGE ...SUB		(Move down as many levels as
				it takes to get to SUB)

$ CHANGE *...MYDIR		(Change to first subdirectory
				MYDIR found on disk (This
				could be very slow))
$ CHANGE +			(Move up 1 level, + is same as
				- which gets confused with DCL
				line continuation)
2 SEARCH_LIST
Define the symbol SEARCH_LIST as a series of device names
and CHANGE will search those devices for the specified
directory (If you omit the device).

For example:

	$ ASSIGN "DSKB:DSKA:SYS$SYSROOT:" SEARCH_LIST

Then:

	$ CHA SYSLIB

will set you to SYS$SYSROOT:[SYSLIB] no matter what your
current device.
2 qualifier
/NOLOG
Suppress typing of new default specification.

This qualifier must appear first in the command line (right after CHANGE).
There is no /LOG qualifier.

For example, defining:

	$ CHA*NGE :== $SYS:CHANGE/NOLOG

Causes the CHANGE command to be a non-logging CHANGE command
