  Granada oscillation code (GraCo) is a software constructed to compute
adiabatic and non-adiabatic oscillation eigenfunctions and eigenvalues. The
adiabatic version gives the standard numerical resolution, and also the
Richardson extrapolation, different sets of eigenfunctions, different outer
mechanical boundary conditions or different integration variables. The
non-adiabatic version can include the atmosphere-pulsation interaction. The
code has been used for intensive studies of \delta Scuti, \gamma Doradus, \beta
Ceph., SdO and, SdB stars. The non adiabatic observables ``phase-lag'' (the
phase between the effective temperature variations and the radial displacement)
and \delta T_{eff}/ T_{eff} (relative surface temperature variation) can help
to the modal identification. These quantities together with the energy balance
(``growth rate'') provide useful additional information to the adiabatic
resolution (eigenfrequencies and eigenfunctions).
