Classes that implement this interface can be autosaved.
This method is called when the object is registered to be
autosaved (see autosave:register
Adds obj to the list of objects to be autosaved. When it is time
to autosave, the do-autosave method of the object is called. This
method is responsible for performing the autosave.
There is no need to de-register an object because the autosaver keeps a
to the object; i.e., the autosaver does not keep an object
from garbage collection.
The path to the a table-of-contents file for the autosave files.
The parameter is inspected only when the autosave timer expires, which will not happen until
after the first call to autosave:register
Opens a GUI to ask the user about recovering any autosave files left around
from crashes or other catastrophic failures.
If table is not supplied, then the file in
autosave:current-toc-path is consulted to find the files to restore.
If it is supplied, then it is used to find the files to recover. Each inner
list names the original file and the autosave file. If the original file
was never saved, then the first element of the list is #f.
This function doesn’t return until the user has finished restoring the
autosave files. It uses yield to handle events, however.)