There are many adjustments and options in the Preferences of Day One. You can do things like
Sign in to your Day One account
Change fonts in the Appearance setting
Create a passcode
Import and Export data
Create or restore local backups
Contact our support team
To access preferences, click Day One > Preferences in the file menu, or use the keyboard shortcut Command+comma while Day One is the active app.
In version 3.0 and later, Click Settings in the Journal sidebar when enabled.
In version 2.9.2 and earlier, you can also click the gear icon at the bottom left of the Journals pane.