Default Constructor.
  Default Debug mode is 1
  To change it use SetDebugMode(debugmode)

 Default Destructor
  Destroys Chains

 Copy Constructor. Note that this should not be used, since it is not reliable and
 does not necessairily do what you think it should.

 Add new files to the reader.

 The file name may use the wildcarding notation, eg "xxx*.root" means all files
 starting with xxx in the current file system directory.

 This method will return with the number of files that were actually added to
 the list of files. So 0 (zero) means the files were not found.

 case with one single file

  This method adds a single new file into list of files
  to be analysed. This list is stored in the TChain *fEventChain
  and separately in TChain *fScalerChain (for the scalers.)
  (These chains can be accessed directly with the GetChain(char *which) )

  The AddFile method checks if the file requested can actually be read 
  (unlike TChain::AddFile) and will return kERR_File_Not_Found on error.

  If the branches on the chain are not yet initialized, a call to AddFile
  will call InitBranches().

  Use the TDSTReader::Add() or TDSTReader::AddListOfFiles() to add
  multiple files at once.

  For nentries see the TChain::Add() method. (default works fine, so don't specify.)

  Returns a negative number when there was a problem adding the file,
  returns 0 (zero) if the file was added succesfully.

 This adds a single EPIC file into the fEPICChain. If the function fails
 to add the filename, or if it contains no trees, then the function returns
 kERR_File_Not_Found. If InitEPICBranches has not yet been called the function 
 calls InitEPICBranches. On a successful add the function returns kNOERR.

 The run numbers must be added in order, otherwise if GetEPICValue is called
 it will most likely become confused and bounce back and forth between the 
 out of order runs and never return a value.

 Get an event entry from the file(s) and load it.
 Returns the number of bytes read.

 NOTE: This WILL affect the fCurrentEvent which is set to entry.

 Next() reads next available Entry in TREE into 
 Clone Arrays. On success returns 0 otherwise -1 will
 be returned..
  fCurrentEvent = 17;

 This is a virtual stub. The code does nothing, but is intended to be
 replaced by your own code. You point to your own code with the SetNotify() method.
  

  InitClones Initializes Clone Arrays for all Banks.
  This should only be called once. 

  CleanClones Cleans Clone arrays to Read new 
  Entry from the tree.
  Calls Clear() which is faster than Delete(),
  according to TClonesArray documentation Clear() should be faster.

delete all scaler clone arrays

  InitBranches Initialize Branches 

 Setup Event Branches and set branch addresses
 to  ClonesArrays

 Not every file is always going to contain all branches.
 We test the presence of the branch before setting the BranchAddress,
 since setting the address on a branch that is not in the file causes a fault.

 Print information about this reader. 
 With argument full=1 print even more information.

 Set the Branch Address for the fEPIC pointer.

 Makes a table containing the last physics event number before each
 Epic. The table is used in GetValue to search for the EPIC entry 
 corresponding to the current physics event.

 For Debugging ETC, print usefull information on this event.
 (To be extended )

Print out the run number and the range of event numbers for the
current EPIC. Useful for debugging purposes.

 Return the EPIC value corresponding to name for the current EPIC event
 Changes fCurrentEPIC to the Entry corresponding to the current physics
 event#. Leave this as a sequential search because it is unlikely that 
 the relevant EPIC will change rapidly enough in between calls to make 
 a binary search more effiecient. Right now this is done the "safe" way, 
 that is GetEntry is called each time fCurrentEPIC is updated. The table
 could allow you to find the right event without this call but using this
 call allows us to check the run number each time.

   This Function returns number of rows (number of 
 entries) of specified Bank (Clones Array). The string
 argument passed to function is the name of bank.
 EVNT,ECPB,SCPB,DCPB,CCPB or LCPB.
 Any other string passed to function will return -1 
 indicating that there is no bank with that name...

 Returns the number of the current event in the Next() sequence.
 This is not the "Physics event" number, which you get from the header class.

 Return the current event number.
 This is the "Physics event" number, which you get from the header class.

 Return the current run number.

 Get a specific bank given the bankname at a specific row given the row name  

 Return the number of entries in the total chain.

 Return the number of entries faster. Not always
 correct, if a call to GetEntries() has not been
 done since the last file was added.

 Returns the TTree opened by this reader.
 For the SCALER TTree the argument must start with an S
 Note that this actually passes a TChain * (a type of TTree *).

 Set the fCurrentEvent and the fCurrentScaler to 0.
 Thus the next Next() call will start reading at the beginning of the 
 current Chain of data files.