= release note for the version 1.1.0 =
== New I/O in the bhabhas treatment ==

before this version the treatment of bhabhas was invoked by the keyword '''do_bhabhas'''
With do_bhabhas = 1 a file bhaha.ini was supposed to contain a list of bhabha pairs. As ouput file, bhabha_prod.dat   contained recopies of the exact number of treated bhabha pairs.  

With do_bhabhas = 2, a second input file (bhabha_photon.ini) was supposed containing, photons related to these pairs and an output file was provided (bhphotons.dat) which contained boosted photons. In addition to bhabha_prod.dat , was provided bhphoton_prod.dat containing recopies of the exact number of treatd photons.


'''From the version 1.1.0''' on, we have the following significations for the keyword '''do_bhabhas''' : 

'''do_bhabhas = 1''' : a single input file '''bhaha.ini''' is supposed with the same format as before. No output bhabha files ( other than secondaries, as before)

 
'''do_bhabhas = 2''' : two input files, as before, with the same format : '''bhaha.ini''' and '''bhabha_photon.ini'''. As   output, a single file (other than secondaries, as before) : '''boosted_bhabhas.hepevt at the HEPevt format '''. This last constains the boosted bhabhas (pairs + photons).

'''do_bhabhas = 3''' : ''' a single input file bhaha.ini.hepevt, in the HEPevt format, containing the bhabha sample events, with pairs and photons together'''. A single output file '''boosted_bhabhas.hepevt at the HEPevt format ''' as for the previous case.