RIGAL/DEMO  V.2.18 
==================
   May 29, 1992

This version of Rigal is non commercial 
and useful only for demonstration and simple examples.

For IBM/PC/XT, IBM/PC/AT, IBM/PS-2 and compatible,
 under MS-DOS with any colour graphic card.
Hard disc is not used for DEMO execution.

DEMO package may be moved to another hard or floppy disc. 
Not copy-protected. Free available.

WHAT TO DO
==========
1. Insert this floppy disk to drive and close disk drive door.
 ( for example, drive  A: )
2. Press    A:  and "ENTER" key.
3. Press    DEMO and "ENTER" key
4. Watch demo package - about 20 minutes (in default mode )
5. Open disk drive door and take out this floppy disc.


DEMONSTRATION
=============
  Press DEMO 

  Press DEMO 10 for fast show,
        DEMO 300 for low speed.
    (default is DEMO 100)   
  
RUNNING RIGAL
=============
 Press RIG [ file_name ] in this directory  
       
 RIG.EXE includes
           Built-in Text Editor, Checker and Interpreter.
           Default work file is WORK.RIG.
           You can call RIG.EXE from ANY directory too.
           You can give it one parameter - file name without .RIG

      Documents in English

README   1ST  - this file
HELP     TXT  - small help about scanners
RIGAL    DOC  - short description of RIGAL language

      Examples

WORK     RIG   - printnig small tree
EXA      RIG   - used for DEMO.
EX1      RIG   - takes Head and Tail of list ( like EXA.RIG)
EX2      RIG   - Analyses arithm. expression
EX       TXT   - example of expression
*        RIG  - small language example

      All other files are necessary for running DEMO
      ( or are generated during running DEMO or RIG )