CTests.md

+Tools available for the histograms comparison:
+
+ 1. `${CMAKE_SOURCE_DIR}/cmake/scripts/yoda2root.cmake -DAIDA2ROOT=${AIDA2ROOT}`, example is 
+
+        ${CMAKE_SOURCE_DIR}/generators/reference/aida2root.py
+          -DPython_cmd=${Python_cmd}
+          -Dyoda_home=${yoda_home}
+          -DINPUT=filepath/filename.yoda
+
+    creates filename.root at filepath. In addition creates filename.aida
+
+ 2. `${CMAKE_SOURCE_DIR}/generators/reference/reference.py`. The main mode of work:
+
+        reference.py file1.root file2.root "Path=name1" limit=0.05
+    
+    or 
+    
+        reference.py file1.root file2.root "Path=name1,name2" "limit=0.05,0.05"
+    
+    Compare histogram name1 in the two root files, Kolmogorov test, conf. limit 5% 
+    
+    If the path is "XS", the script will calculate chi2 and use `Tmath::Prob` to calculate probability.
+
+    Initially there was another mode of work:
+
+        reference.py file1.yoda file2.yoda "Path=XS" limit=0.05
+        
+    But it is disabled now (will give an error). To use it, the code is to be further developed, adding extraction of scatter plot errors from yoda.
+
+
+### How to make validation analyses and publish results
+    # Use -DVALIDATION=ON in CMake command (and not use LCG_IGNORE)
+      cmake -DVALIDATION=ON ...
+    # build 'validation' target. All required packages and tests will be built automatically
+      make validation                 # build validation tests for all avaiable packages
+      make validation.<package>         # -//- for all versions of package
+      make validation.<package>-<version> # -//- for selected version of package
+    # publish results
+      make validation.publish         # publish results to genser.cern.ch web interface. This step requires sftnight AFS token (will be asked if it isn't present)