binietoglou@2: Adding channels
binietoglou@2: ===============
binietoglou@7: 
binietoglou@7: 
binietoglou@7: 
binietoglou@7: .. _signal-types:
binietoglou@7: 
binietoglou@7: Signal types
binietoglou@7: ~~~~~~~~~~~~
binietoglou@7: (explain here all the signal type abreviations).