What is the purpose of the account sheet?

I added the account sheet and it is blank until I start selecting accounts and using it. What is the reason for the sheet - is there a tutorial?

@joek. The Accounts Sheet is intended for overriding or customizing accounts. (i.e. correcting the class, asset or liability, and using Groups to organize your accounts). The input made in the Accounts Sheet will be reflected on your Balances sheet.