TOPS-10 Monitor Calls Manual Volume 2 AA-K039D ... - Trailing-Edge

GLOSSARY
Directory
A file that contains the names and pointers to other files on the
device. The MFD, UFDs, and SFDs are directory files. The MFD is
the directory containing all the UFDs. The UFD is the directory
containing the files existing in a given project-programmer
number area. The SFD is a directory pointed to by a UFD or a
higher-level SFD. The SFDs exist as files under the UFD. The
DIRECT monitor command lists a directory.
Directory device
A storage retrieval device, such as disk, DECtape, or labelled
magnetic tape, that contains information describing the names of
files and the layout of stored data (programs and other files).
A directory device is randomly accessible.
Directory path
The ordered list of directory names, starting with a UFD name,
which uniquely specifies a directory without regard to a file
structure. A file structure name, a path, and a file name and
extension are needed to uniquely identify a file in the system.
Directory specification
DIS
Disk
The way that the user specifies the directory to the SCAN
program. It is always typed within square brackets. Fields are
separated by commas. The first two fields are the project and
programmer numbers which are octal. They specify the particular
UFD. Additional fields are SFDs in order from the UFD down. The
following notations are allowed:
[PPN]
UFD
[PPN,sfd, ... sfd] full path to directory
[-] default directory
[,] your UFD
Display light pen.
A form of mass storage device in which information is stored on
rotating magnetic platters. A disk is a directory device.
Disk address
All references to disk addresses refer to a logical or relative
address; they do not refer to any physical addressing scheme.
The basic addressable unit is a 200 (octal) 36-bit word block.
Dismounting a fi1e structure
Deleting a file structure from a user's active search list by
using the DISMOUNT command. It does not necessarily imply
physical removal of the file structure from the system.
Dormant fi1e structure
A file structure that is physically mounted but has no current
users; that is, when the mount count is zero.
Gloss-II