PASS.DOC

The Pass task is an example of a program needed to implement the PASSWORD
and PRIVILEGE functions in Script.  It is called by Script either as PWD or
PRV.  The username is optionally passed in the command line, if it is not
passed, then it is requested.  A '*' passed in the command line will also
cause the username to be requested.  Then the password is then requested,
checked against the entry, (requires exact case match), and the success of,
or lack of is then reported via exit-status.  If PRV is called then the 
sequence is the same until the end, where the privilege mask is returned
in the status word.  

Summary of Returns:

	PWD	exstat = 1		Password ok.
		exstat = 4		Password failed, name was not found,
					or the file could not be opened.

	PRV	exstat = mask+1 	Password ok, masks are a 16 bit
					but the lower bit is determined by
					Script based on the privilege of the
					user, allowing the lower bit to be
					used as a validity flag
		exstat = 4		Password failed, name was not found,
					or the file could not be opened.

PASS does not maintain the data file, which is LB0:[1,1]PASSWORD.DAT.
The file is made of 80 character records where the username is the first
35 characters (space filled), the password the second 35 characters, and
the privilege mask held in a decimal string, in the last 5 characters.
Characters 71 through 75 are not used.  No encoding of the password is done,
(told you there wasn't much to it).
The maintenance of the data file was done by a now misplaced command file.
Some kind of encryption can be added with little trouble to the program.