  11/3/70
  DIRECTORY (V)

  NAME              format of directories

  SYNOPSIS

  DESCRIPTION       A directory behaves exactly  like  an  ordinary file, save
                    that  no  user  may write into a directory. The fact that a
                    file is a directory is indicated by  a  bit  in the flag word
                    of its i-node entry.

                    Directory  entries  are 8 words long. The first word is the
                    i-node of the file represented by the entry, if non-zero;
                    if zero, the entry is empty.

                    Words  1-4  represent  the  (8-character)  file name, space
                    padded on the right. These words are not necessarily
                    cleared for empty slots.

                    By convention, the first entry in each directory is
                    for "dd", which is  the  "directory  directory" that  holds
                    all the users' home directories and the "system" directory.
                    The "system" directory contains "init" and "sh".

  FILES

  SEE ALSO          file system format

  DIAGNOSTICS

  BUGS

  OWNER             ken, dmr