+ default value: `0`
+
+* `autosu`: When a file is saved that the user doesn't have permission to
+ modify, micro will ask if the user would like to use super user
+ privileges to save the file. If this option is enabled, micro will
+ automatically attempt to use super user privileges to save without
+ asking the user.
+
+ default value: `false`
+
+* `backup`: micro will automatically keep backups of all open buffers. Backups
+ are stored in `~/.config/micro/backups` and are removed when the buffer is
+ closed cleanly. In the case of a system crash or a micro crash, the contents
+ of the buffer can be recovered automatically by opening the file that was
+ being edited before the crash, or manually by searching for the backup in
+ the backup directory. Backups are made in the background for newly modified
+ buffers every 8 seconds, or when micro detects a crash.
+
+ default value: `true`
+
+* `backupdir`: the directory micro should place backups in. For the default
+ value of `""` (empty string), the backup directory will be
+ `ConfigDir/backups`, which is `~/.config/micro/backups` by default. The
+ directory specified for backups will be created if it does not exist.