TMVA::Tools

 simple statistics operations on tree entries
 creates histograms normalized to one

 normalize histogram by its integral

 parser for TString phrase with items separated by ':'

 parse option string for ANN methods
 returns the square-root of a symmetric matrix: symMat = sqrtMat*sqrtMat

 check spline quality by comparison with initial histogram

 normalization of variable output

 vector rescaling

 re-arrange a vector of arrays (vectors) in a way such that the first array
 is ordered, and the other arrays reshuffeld accordingly

 check if input string contains regular expression

 routines for formatted output -----------------
 output logger

 print welcome message (to be called from, eg, .TMVAlogon)