Related Clues:

• A or B, in preparations
• Scale drawing of flat lacking a key
• 'Pb' element
• A heavy metal
• Modern paint no-no
• Head or heart of a writer?
• Architect's creation
• Go ahead with the roof covering
• Strategize
• It blocks Superman's X-ray vision
• Plan polkaing periodically
• Gasoline additive, once
• It's not the Pb you want in a PB&J
• Short wire used as jumper — Pb
• Scale drawing; scheme