What is the argument should an Indian trader pass to both these functions in R? : There is a documentation for backtesting in R in GitHub(https://timtrice.github.io/backtesting-strategies/). 

I have a query in two lines of code mentioned in this document. 

##First line

    

> `Sys.setenv(TZ = "UTC")`

##Second line

> `currency('USD')`

As you can see, the first line sets - system time to the US and the second line - sets the currency in which trading is occurring to the US. I am an Indian Trader and my job is to do back-testing with equity data for Indian companies. I use quantstrat and quantmod packages along with its dependencies. The data is downloaded from Yahoo Finance through R platform.

 - What is the argument should an Indian trader pass to both these
   functions(Sys.setenv and currency)???. The currency of Indian market
   is INR(Indian Nation Rupees) and the time of India is GMT+5:30

