The canonical (-C) output for BSD hexdump(1) formats data like this: 00000000 54 68 65 20 71 75 69 63 6b 20 62 72 6f 77 6e 20 |The quick brown | 00000010

The canonical (-C) output for BSD hexdump(1) formats data like this: 00000000 54 68 65 20 71 75 69 63 6b 20 62 72 6f 77 6e 20 |The quick brown | 00000010 66 6f 78 20 6a 75 6d 70 73 20 6f 76 65 72 20 74 |fox jumps over t| 00000020 68 65 20 6c 61 7a 79 20 64 6f 67 |he lazy dog| This is also a common default format for many hex editors. The visual representation columns--which display all isgraph(3) ASCII values as their ASCII character, and every other 8-bit value as "."--could be interpreted by lay readers as a margin that decodes the octal and hexadecimal values which take up the 4/5ths of the 78-column display.