TARDIS were not, its weight would shatter the Earth's surface. In the tie-in novels, the interior of the TARDIS has been known to contain an entire city, encompass an entire parallel Earth, and even dwarf Gallifrey itself when turned inside out. A distinctive architectural feature of the TARDIS interior is the roundel. In the context of the TARDIS, a roundel is a circular decoration that adorns the walls of the rooms and corridors of the TARDIS, including the console room. Some roundels conceal TARDIS circuitry and devices, as seen in the serials "The Wheel in Space" (1968), "Logopolis", "Castrovalva" (1981), "Arc
Circular letter of credit Circular letter of credit A circular letter of credit was a letter of credit issued by a bank or related financial institution to a private person, usually an individual of means, which enabled that person to draw funds from correspondent banks while traveling. This was considered safer than carrying large sums of cash. Such letters were often issued on special paper with formal lettering and designs to discourage counterfeiting. The circular letter of credit generally consisted of two or three separate items. The first being the actual letter addressed to correspondent banks stating the amount of funds that can be