I came across a line of code like this:

string path = @"C:\Temp\" + this.oReceipt.Entity.ReceiptNumber + @".pdf";

What is the "@" for?

I am now wanting to store the folder ina variable, so how would I change that line to something like this:

string path = @oAppSettings.ReceiptFolder + this.oReceipt.Entity.ReceiptNumber + @".pdf";