I saw the 13 major currency in the "Documentation", but it does not tell you what they are. I had look on "Data", but it showed Oanda`s and FXCM`s currency.  Where are the 13 major currency hiding?

PS: If QC can provide a code library (sourced from staff, or community) will be great. At the moment, the sample code provided by QC are very simple, please add some more advanced code into it, so the new users can accelerate the learning speed.