  This software performs the combination of $m$ correlated estimates of $n$
physics observables ($m\ge n$) using the Best Linear Unbiased Estimate (BLUE)
method. It is implemented as a C++ class, to be used within the ROOT analysis
package. It features easy disabling of specific estimates or uncertainty
sources, the investigation of different correlation assumptions, and allows
performing combinations according to the importance of the estimates. This
enables systematic investigations of the combination on details of the
measurements from within the software, without touching the input.
