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+This file contains functions that take the tuples produced in Ganga (aka stripped data) and applies further selection. The results are saved in the local folders defined in [[Paths.hpp|Paths]]
+
+## Function parameters 
+ * string magnet 
+     Refers to the polarity of the sample, it is either "down" or "up"
+ * string year
+     Year of the sample, 2011, 2012, 2015, 2016, 2017 or 2018
+ * int Run 
+    1 or 2: Run 1 is 2011+2012, Run 2 is 2015+2016+2017+2018
+ * bool MC
+     false = use data
+     true = use MC
+ * bool ReferenceChannel
+     false = use the signal Q2 region
+     true = use the Jpsi Q2 region
+ * bool PHSP
+     false = do not use PHSP MC
+     true = use PHSP MC
+ * bool B0
+     false = do not use the B0toKstMuMu sample or B0toKstJpsi sample (depends on bool ReferenceChannel)
+     true = use  the B0toKstMuMu sample or B0toKstJpsi sample (depends on bool ReferenceChannel)
+ * bool K1
+     false = do not use the B0toK1MuMu or B0toK1Jpsi sample (depends on bool ReferenceChannel)
+     true = use  the B0toK1MuMu or B0toK1Jpsi sample (depends on bool ReferenceChannel)
+ * bool Inc
+     false = do not use the B0toXMuMu or B0toXJpsi  sample (depends on bool ReferenceChannel)
+     true = use  the B0toXMuMu or B0toXJpsi sample (depends on bool ReferenceChannel)
+
+# Functions 
+
+### copyDataForTMVA()
+
+This fuction takes the preselected data files, adds a branch for the TruthMatching variables and saves the files again. Since root does not allow to just add a branch easily, it creates a new file with a new name, deletes the old one and lastly renames the new file to match the original tuple file.
+
+* Parameters
+year, magnet
+
+* Return
+1 if everything is okay; 0 if something failed
+
+
+
+### copyDataForTMVAAll()
+Performs **copyDataForTMVA()** for all years and polarities.
+
+
+### preSelection()
+Loops over all .root-files created by subjobs in [ganga](https://lhcb.github.io/starterkit-lessons/second-analysis-steps/ganga-scripting.html) and converts them into one tuple, saving them in a folder defined in [[Paths.hpp|Paths]]. Trigger, kinematic, PID and some more cuts are applied. Q^2-Binning is applied, Kshort becomes extra branch for decay inside or outside of VELO. Histograms of inv. mass distributions and more are created and saved in separate .root-file
+
+
+* Parameters
+year, magnet,  MC, ReferenceChannel, PHSP,  B0,  K1,  Inc
+
+* Return
+1 if everything is okay 0, if something failed
+
+
+
+### runAllYearsAndMagPol()
+Executes **preSelection()** for all years and polarities for a given Run
+
+* Parameters
+MC, ReferenceChannel, PHSP,  B0,  K1,  Inc, Run
+
+
+### runAllSignalData()
+
+Executes **runAllYearsAndMagPol()** for data for a given Run
+
+* Parameters
+Run
+
+### runAllSignalMC()
+
+Executes **runAllYearsAndMagPol()** for Signal MC for a given Run
+
+* Parameters
+Run
+
+### runAllRefMC()
+
+Executes **runAllYearsAndMagPol()** for Ref MC for a given Run
+
+* Parameters
+Run
+
+### runAllPHSPMC()
+
+Executes **runAllYearsAndMagPol()** for PHSP MC for a given Run
+
+* Parameters
+Run
+
+### runAllB0MC()
+
+Executes **runAllYearsAndMagPol()** for B0toKstMuMu MC sample or B0toKstJpsi MC sample for a given Run
+
+* Parameters
+Run, ReferenceChannel
+
+### runAllK1MC()
+
+Executes **runAllYearsAndMagPol()** for BtoK1MuMu sample or BtoK1Jpsi sample MC
+
+* Parameters
+ReferenceChannel
+
+### runAllIncMC() 
+
+Executes **runAllYearsAndMagPol()** for BtoXJpsi MC for a given Run
+
+* Parameters
+Run
+
+### runAllBkgMC().
+
+Executes **runAllB0MC()**, **runAllK1MC()** and **runAllIncMC()** for both Runs and Jpsi and MuMu 
+
+* Parameters
+---
+
+
+# Functions not created by me
+
+### getTCKs()
+Return the exact events numbers for every MagDown and MagUp, Year and TCK configuration.
+
+### ExclusiveTriggerLineSelection()
+
+### plotHistos()
+Selected histograms generated in the preSelection() function are plotted and nicely formatted before saved as .eps file
+
+### compare_PIDgen_Eventnumbers()
+
+
+
+