     This program demonstrates numerical solution of Schroedinger 
equation for the particle in one-dimensional potential. The program
determines eigenenergies, eigenfunctions, and the absorption spectrum
(instead of intensities, we use the moments of transitions, so one can 
compare intensities only for lines which are close to each other),
and demonstrates all this (with the termscheme) on the screen.
     In the current state, the program works with the fitted
potential for inversion in NH3 molecule (see the book of Townes
and Shavlov). One can see the inversion line at 0.8 cm-1 and doubling 
of the vibrational band near 900 cm-1. In the program, there are also
the fragments which describe HCl molecule in harmonic approximation and 
in Morse approximation; to run them, one shoud insert/delete the signs
of comments. Then one can see that in harmonic approximation overtones
are forbidden, but they appear when the potential becomes anharmonic.
