Flag "-e" of all the gstreamer pipelines in Accelerated GStreamer User Guide

I am going through all the documentation and I didn’t find some explanation about the role of the flag “-e” at the end of the pipelines proposed in the Accelerated GStreamer User Guide for the TX2.

Document: DA_07303-4.0

The -e means to send an EOS (End of Service) message once the pipeline has reached the end of the video/audio/etc. It basically tells Gstreamer to close itself gracefully when it finishes, such as sending the rest of the buffers still in the pipeline, muxing the file, etc.

http://gstreamer-devel.966125.n4.nabble.com/gst-launch-1-0-with-e-or-without-e-td4681497.html

Thank you!