Save stores model orientations and other basic features of a Chimera session using SimpleSession (see the SimpleSession documentation for lists of what is and is not saved). A session file consists of Python code that reconstitutes the state of Chimera by opening data files and performing other operations; if no .py suffix is entered, it will be added to the name automatically. The original input files must still be present to restart a session; if they are not in the same place(s) as when the session was saved, the user will be queried for their locations.
There are multiple ways to save sessions and restart sessions.