Long description

The figure consists of a vertical block with 11 rows labeled 100 to 109 from bottom to top. The first two rows are empty, the third row is labeled Second extension record and it is divided into five parts which are labeled Run hash m plus 1 and Run n. The next two rows are empty, the sixth row is labeled First extension record and it is divided into three parts which are labeled Run hash k plus 1 and Run n. The next two rows are empty, the ninth row is labeled Base record and it is divided into five parts which are labeled M F T 105, M F T 108, Run hash 1, and Run hash k and the next two rows are empty.