Here's what's available in terms of documentation:
Halgin D.S., & Borgatti S.P. 2012. An introduction to personal network analysis with E-Net. Connections. Vol. 31, 1: 37 - 48 [pdf]
Filtering data in E-Net [pdf]
Data formats [pdf]
FAQ: Missing midas.dll - Dec 18, 2011 10:15:53 PM
Filtering egos, alters, ego-alter ties, alter-alter ties, etc. - Jul 02, 2012 8:55:0 PM