The transaction history function is on the Reports menu of Rxdme2.  The transaction history allows you to build a database of All claims for a range of dates.  You can then view this set of claims and search through it for reports.   What makes transaction history so great is , it takes the 1500 form and recreates the claims in a separate file where all lines of the 1500 form are broken down or separted into their own procedure codes / claims.  Whereas rxdme2 holds upto 6 line items in one claim.  This breakdown allows you to search right down to the individual procedure code.

Here is an example;
In transaction history menu we start by clearing the Transaction history file
then we build the transaction history for a range of dates, lets use 01/01/2008 thru 12/31/2009.
We now have the file built, we can use the View transaction history to see what claims are in this range.

You can now print a report of the search results from the same screen.

you can add lots of criteria to your history reports such as
dates of service range
procedure codes (one or multiple)
insurance plan

however the report is hardcoded to print specific information, but you do get the results of the search.