EMU Software Package
The EMU or Event Management Unit is used to as structure in which to contain a CODA (CEBAF Online Data Acquisition) software component such as event builder or event recorder. The EMU not only handles the module - which provides the main functionality such as event building - but also all the communication channels into and out of the module.
Documentation
Here are links to the documentation contained in the github repository (although it may also be accessed at the home page).