User guide

The 'root' directory
In a simple system, the directory structure of one disc might be:
Where names shown in capitals are directories, names in small letters are
files. The directory named $, at the top of the tree, is often called 'root',
because it contains all the other directories and files on the disc.
Sub-directories
The directory EDP contains a directory (MEMOS) and two other files; the
directory MEMOS contains four more files. The directory TEMPS just
contains three files, one of which has the same name as a file in EDP. These
files are however entirely distinct.
Using the filing cabinet analogy once again, the $ directory could be the
filing cabinet, containing a number of drawers (labelled EDP, TEMPS, etc).
Within each drawer are typed documents (files); some are just in a heap (for
example, qrx44 and workhrs, in EDP), while others are organised into
folders, or sub-directories (for example, jones 1 , jones2, report and safety, in
the folder named MEMOS).
Directories
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The current directory
Whenever FileStore is being used, users will be using one of the directories
(have a particular drawer open), called their current directory. This means
4 
2 THE FILESTORE MANAGER'S ROLE