  The Liege Oscillation code can be used as a stand-alone program or as a
library of subroutines that the user calls from a Fortran main program of his
own to compute radial and non-radial adiabatic oscillations of stellar models.
We describe the variables and the equations used by the program and the methods
used to solve them. A brief account is given of the use and the output of the
program.
