The Blocs application comes with a built-in auto backup system that automatically creates additional backup copies of the currently open Blocs project.
To customise the Auto Backup system, navigate to the main preferences by selecting Blocs > Preferences from the main menu.
From the preferences window, navigate to the menu item labelled Auto Backup. From here you can set how many backup copies are stored for a single project, how often a backup is created and the location of the backup vault. It’s also possible to disable the auto backup feature here, if you don’t require it.
All backups are stored in a dedicated vault and can be quickly accessed via the main menu File > Open Backup Vault.