What's the SkipAmount, AutoAcceptAmount and Percentage mean?

Hi,

   Could you help me to explain the following configuration Option:

   Application.Invoicing.SkipAmount

   This parameter specifies a threshold amount below which the system skips validation of an invoice. The value represents an amount in the default currency.Why we use this parameter? After the invoice skips validation, how to handle it?

   Application.Invoicing.AutoAcceptAmount& Application.Invoicing.AutoAcceptPercentage

   These parameter specifies a threshold for auto-accepting invoice reconciliation documents based on the total amount of the IR. Why we have these 2 parameter? Could you give me a Business example?

   Thank you very much.