Long description

Part (a): The horizontal block shown is divided into 48 parts labeled 0 to 47. An arrow is pointed to the second row and labeled Original uncompressed file. Three other blocks are connected to the horizontal block. The first block is labeled Compressed and marked 0 to 7 on the upper portion and disk address 30 to 37 on the lower portion, the block is connected by a dotted line from the first 16 parts of the horizontal block. The second block is labeled Uncompressed which is divided into 16 parts and marked 8 to 23 on the upper portion and disk address 40 to 55 on the lower portion, the block is connected by a dotted line from the 16 to 32 parts of the horizontal block. The third block is labeled compressed and marked 24 to 31 on the upper portion and disk address 85 to 92 on the lower portion, the block is connected by a dotted line from the 32 to 47 parts of the horizontal block. Part(b): The horizontal block shows that divided into 9 parts. The first part is labeled Standard info and the second part is labeled Filename. The third part is labeled Header which is subdivided into two parts and labeled 0 and 48. The fourth part is subdivided into two parts and labeled 30 and 8. The fifth part is subdivided into two parts and labeled 0 and 8. The sixth part is subdivided into two parts and labeled 40 and 16. The seventh part is subdivided into two parts and labeled 85 and 8. The eighth part is subdivided into two parts and labeled 0 and 8. The last part is labeled Unused. The fourth, fifth, sixth, seventh, and eighth part is together labeled Five runs (of which two empties).