A transaction is an object encapsulating a single file transfered from a smartpen. Typically, a transaction is a StrokeCollection, but it can be any type of data that the smartpen produces. Properties of a transaction are Pen, Page, low timestamp of data and high timestamp and file type. A transaction is typically acquired from a TransactionList. A transaction can also be used as a filter for selecting transactions to read or to filter a TransactionList. In those cases, wild card constants and boundaries (for example, for time stamps) should be used. As an example: TransPenIdWild selects all pens.

AFP Wrapper