Related Clues:

• Work on the keyboard
• Work on a text
• Use a Selectric
• Work at a keyboard
• Relatively relaxed, as personalities go
• A or O, at the blood bank
• Rare blood classification
• Important transfusion datum
• Compose, in a way
• Use an Underwood
• Keyboard
• Blood __
• Disclosure to a dating service
• Sort or kind
• Blood category