Transaction Tags
You may wish to record some additional information about your transactions, apart from simply the source and recipient of funds. Transaction tags allow you to organize transactions in a second way, which is effectively any second way you like - assign transactions any number or variety of tags, like "summer vacation" or "tax deductible," and these tags can be used to generate more informative reports. Tags can be added, changed and deleted via the Tools->Edit Transaction Tags menu.
Reports based on transaction tags are available through the Graphs and Reports function, which is explained in detail in Chapter 10: Graphing and Reporting.