DEMOS - File Manager
====================

DEMOS
-----

HUNTER's file manager DEMOS (Disk EMulation Operating System)
manipulates files and runs CP/M programs. A large range of commercially
available software will run on HUNTER with no modification.

After switching HUNTER on, the 'Welcome Message' is displayed and the
following screen can be obtained by pressing any key:

::

   -----------------------------------------
   |            29 NOV 1983 09:50          |
   |** DEMOS VER 2.2 9.A**                 |
   |BAS     .sys COMS    .sys CLCK    .sys |
   |TERM    .sys EDIT    .sys              |
   |                                       |
   |                                       |
   |                                       |
   |DIR  STAT BAS  COMS CLCK TERM EDIT KEYS|
   -----------------------------------------

The bottom line show the titles of the soft keys. See 
:doc:`../hunter-operation/file-manager-display`.

The File Manager has several important functions:

#. All programs such as word processors, spreadsheets and the Basic
   Interpreter are run from the File Manager.
#. Various system files can be selected, for example, setting up the
   communications protocols.
#. Information on the size of the files present
   (:doc:`file-manager-commands/stat`) or file operations like
   transmitting a file (:doc:`file-manager-commands/send`) can be
   performed.

File Names
~~~~~~~~~~

Files are named following the general format of CP/M. They consist of up
to eight alphanumeric characters separated by a period from an extension
of three alphanumeric characters. The extension informs the operating
system of the type of file, if the user so wishes. Generally, the
extensions follow these conventions:

+-----------------------------------+-----------------------------------+
| Extension                         | File Type                         |
+===================================+===================================+
| .HBA                              | HUNTER Basic file containing      |
|                                   | program source code.              |
+-----------------------------------+-----------------------------------+
| .COM                              | A CP/M compatible object code     |
|                                   | file which can be loaded and run  |
|                                   | independently of HUNTER Basic.    |
+-----------------------------------+-----------------------------------+
| .DTA                              | HUNTER Basic data file.           |
+-----------------------------------+-----------------------------------+
| .TXT                              | Any ASCII text file.              |
+-----------------------------------+-----------------------------------+
| .SYS                              | A 'pseudo file', generally in     |
|                                   | ROM.                              |
+-----------------------------------+-----------------------------------+

Keyboard Commands
~~~~~~~~~~~~~~~~~

===== ==========================================
Key   Action
===== ==========================================
CTL+C Reboots when at the beginning of the line.
CTL+E Causes physical end of line.
CTL+H Backspace one character position.
CTL+J (Line feed) terminates input line.
CTL+M (Return) terminates input line.
CTL+R Retypes the current line after new line.
CTL+U Removes current line after new line.
CTL+X Backspace to beginning of current line.
===== ==========================================