If the -chains flag is not given, the return value is a list of lists of transaction data, where each data list contains the transaction size, initiator (or NIL if no initiator), and the transaction flags and type.
If the -chains flag is given, more detailed information about the transaction chains is displayed. The return value will be a list of lists of data for each transaction chain record, where each data list contains the ID, the owner, ID of the previous record in the chain, and the state.