Version 2.2 June 30 1999  Added conf.maxse field to plot_ras utility.  Added info.gam (effective number of parameters) field for  rbf_fs_2 and rbf_rr_2 methods.    Some typos fixed in manual.  Version 2.1 June 15 1999  Fixed some bugs in meth/rbf_fs_2.m. Could cause divide by zero  if any centres were duplicated.    Changed incorrect URL given in util/rbf_ver.m.    Added man/examples/ to rbf2.tar.gz distribution. In version 2.0  this folder had been accidently omitted.    Fixed problem with left/right page numbering in manual and  correctly labelled the axis in figure 3 for rbf_dm.Version 2.0 June 11 1999