Starting with version 2.5 of the CORE HL7 Viewer software you can search for HL7 messages using using our CORE HL7 Matching Engine which is driven by a collection of Matching Instructions for individual HL7 Fields and grouped together by HL7 Segments into xml scripts. This page will deal with how to create a matching script which you can save and reuse again and again to search when Importing Messages from a Folder, or to use in the Main Window to filter your HL7 message store.