    EUODHILOS(Every Universe Of Discourse Has Its
LOgical Structure) is a reasoning assistant system
in which you can define your own logic and develop
many proofs in the defined logic.

    A logic in EUODHILOS consists of language
system and derivation system. You can use special
symbols by creating them with the built-in pattern
editor and assign them to the actual keyboards by
software keyboard facility of the system. Then you
have to give the syntax as 
DCG(Definite Clause Grammar) based formalism with
constructor definition. The language system is
 defined now. 
    The next step is to give the derivation system
which consists of axioms, inference rules, and
rewriting rules. 

    A "sheet of thought" is an environment for
constructing proofs of the logic. You can put
assumptions, axioms, applying rules on sheets of
thought. You can derive both forward and backward.
The results can be saved as theorems and derived
rules. Theorems can be used just like axioms and
derived rules as inference rules in the following
construction of proofs.

    EUODHILOS runs under SIMPOS v.6 or v.7
on PSI-II or PSI-UX.

    The directory you have expanded has the
following directories.

    BUP
    CALC
    DB
    DEF
    Font
    PROOF
    RULED
    THEORY
    WFFED
    login.com

    The "Font" directory contains the font file
for storing user defined symbols. The "THEORY" 
directory contains directories each of which
contains theory data. The other directories
 contain programs of EUODHILOS.

    Note: The current files does not contain
theory data. They will be included in the near
future.

