This video describes how you can make content available offline, how editing documents works in the offline mode, and what happens when you go back online.
You can start using M-Files without a network connection by pressing the Alt key and selecting "Operations" then "Go Offline" from the menu bar, or by clicking your username in the top-right corner of the user interface and selecting "Go Offline" from the context menu. You will then have access to the Offline view, which shows all the objects that have been made available offline. In other words, the documents and objects in this view can be accessed even when a connection to M-Files Server is unavailable.