This document summarizes a study examining electronic medical record (EMR) based documentation in an emergency department. The study observed the documentation practices of 57 clinical staff over 120 hours through 4 main roles and 2 information systems. It found that while EMRs organized relevant medical record categories, they did not fully support the informal documentation practices that facilitate collaboration. Specifically, the study revealed a parallel practice of recording transitional information on informal artifacts that carry provisional information needed to facilitate EMR documentation. The goal was to examine EMR documentation activities and their impact on clinical workflow issues in the complex emergency department environment.