The Keychain consolidates various passwords and passphrases in one place and makes them accessible through a master password or passphrase. When an application (including the Finder) needs to access a password stored in the Keychain, the application asks you to unlock the Keychain if it's not already open.
Nutritional Summary: There are 345 calories in a 100g serving of Tesco Plain Flour. Calorie Breakdown: 3% fat, 84% carbs, 12% prot.
There are 314 calories in a 1 waffle serving of Waffle House Plain Waffle. Calorie breakdown: 35% fat, 57% carbs, 8% protein.