There will be many times when you will want to save your work, especially if you are interrupted often. You have the ability to save a session and come back to it later. Detailed instructions will follow. The application will time out after a few minutes of inactivity.
Saving a Session will save:
the map extent.
all selected features.
any markup placed on the map (except callout markup).
the layers that are turned on.
Save a session:
when you will need to access it over and over again.