Changing in spectral horizontal diffusion tuning from CY29t1 (Feb 2005)
This article by Filip Vana (written in February 2005) explains the new fashion of the spectral horizontal diffusion tuning.
It has been implemented to the model cycle CY29T1. Since that time no
HDIR[x] coefficients are accepted by code. There is also no need any longer
to recompute horizontal diffusion setting with changed resolution. The new
setup (following work of P. Bénard) is fully automatic.