Container files are used to attach references and place the named boundaries for the sheet clipping process. This video discusses the use of container files and using the OHDOT Create Sheets application to create a container file.

https://youtu.be/a8cVrSkzSpk

• What's a Container File 0:00
• Creating a New Design File 1:01
• Create a Container File 1:33
• Attaching the References 2:32