Final answer:
The Aeronautical Information Manual (AIM) contains detailed explanations of airport signs and markings for pilot guidance.
Step-by-step explanation:
The publication that contains an explanation of airport signs and markings is the Aeronautical Information Manual (AIM). The AIM is a comprehensive document that provides detailed information on various aspects of aviation, including airport surface markings, signs, and lighting which help pilots navigate airports safely and effectively. In the AIM, pilots and aviation enthusiasts can find explanations for runway and taxiway markings, holding position signs, and other important airport signage.