     Generation of coordinates of apices and tables of incedence 
for eicosahedron, dodekahedron, and fullerene. 
     The illustrations below are recommended to be viewed
in the regime with 50 lines per screen.
     An idea of passing from eikosahedron (20 apices) to C_60:
- first, we surround each apex with 6 points in the following 
manner; this gives 20x6 apices of hexagons; the ratio of the 
sizes of the hexagon is an independent parameter:

                 O
                 |
                 |
                 |
               * |*
                 |
             *   O   *
               /   \
             /       \
               *   *
           /           \
         O                O

- next, we blow up the hexagons which surround the apices 
until the apices of hexagons pairwise coincide, which gives 
20x6/2 = 60 new points which represent the coordinates of 
C_60:

             O                       O
                \                /
            /       \        /
        *                O             \  *
                  *             *
           /             |
                                     *  \
             *           |
         /            *     *
                         |                \
        O                |                 O
                                     *
         \    *          |               /
                   *            *
           \             O             /
                       /   \
             \       /       \
          *         /          \     /   *
              \
                  /              \
                O     *     *      O
                 \
                                  /
                 \
                     *        *  /
                  \
               *                /   *
                   \     *
                                /
                   \
                    O----------O

('O' denote the apices of eikosahedron, and '*' denote the coordinates
of C_60).
     The program C60.PAS builds Hueckel matrix for C60, 
diagonalizes it, and vizualizes its eigenvectors; to exit, 
one should specify 0 as the number of eigenvector.

