Tree files are 8712 bytes long because ... at the beginning of the tree are 2 4-byte slots for the record numbers of the first and last record and 2*4 = 8 there are 128 4-byte available slots and 4*128 = 512 there are 64 bytes in each record and 128 records and 64*128 = 8192 8 + 512 + 8192 = 8712 here is a dump of races.tr *** TINY-C VERSION 1.0, COPYRIGHT 1977, T A GIBSON *** This C version copyright 2017, T A Gibson rdump.tc - lrb - 4/12/21 file to dump? races.tr Rec 0 05 00 00 00 03 00 00 00 01 00 00 00 02 00 00 00 ................ 03 00 00 00 04 00 00 00 01 00 00 00 06 00 00 00 ................ 07 00 00 00 08 00 00 00 09 00 00 00 0a 00 00 00 ................ 0b 00 00 00 0c 00 00 00 0d 00 00 00 0e 00 00 00 ................ 0f 00 00 00 10 00 00 00 11 00 00 00 12 00 00 00 ................ 13 00 00 00 14 00 00 00 15 00 00 00 16 00 00 00 ................ 17 00 00 00 18 00 00 00 19 00 00 00 1a 00 00 00 ................ 1b 00 00 00 1c 00 00 00 1d 00 00 00 1e 00 00 00 ................ Rec 1 1f 00 00 00 20 00 00 00 21 00 00 00 22 00 00 00 .... ...!..."... 23 00 00 00 24 00 00 00 25 00 00 00 26 00 00 00 #...$...%...&... 27 00 00 00 28 00 00 00 29 00 00 00 2a 00 00 00 '...(...)...*... 2b 00 00 00 2c 00 00 00 2d 00 00 00 2e 00 00 00 +...,...-....... 2f 00 00 00 30 00 00 00 31 00 00 00 32 00 00 00 /...0...1...2... 33 00 00 00 34 00 00 00 35 00 00 00 36 00 00 00 3...4...5...6... 37 00 00 00 38 00 00 00 39 00 00 00 3a 00 00 00 7...8...9...:... 3b 00 00 00 3c 00 00 00 3d 00 00 00 3e 00 00 00 ;...<...=...>... Strike any key ... Rec 2 3f 00 00 00 40 00 00 00 41 00 00 00 42 00 00 00 ?...@...A...B... 43 00 00 00 44 00 00 00 45 00 00 00 46 00 00 00 C...D...E...F... 47 00 00 00 48 00 00 00 49 00 00 00 4a 00 00 00 G...H...I...J... 4b 00 00 00 4c 00 00 00 4d 00 00 00 4e 00 00 00 K...L...M...N... 4f 00 00 00 50 00 00 00 51 00 00 00 52 00 00 00 O...P...Q...R... 53 00 00 00 54 00 00 00 55 00 00 00 56 00 00 00 S...T...U...V... 57 00 00 00 58 00 00 00 59 00 00 00 5a 00 00 00 W...X...Y...Z... 5b 00 00 00 5c 00 00 00 5d 00 00 00 5e 00 00 00 [...\...]...^... Rec 3 5f 00 00 00 60 00 00 00 61 00 00 00 62 00 00 00 _...`...a...b... 63 00 00 00 64 00 00 00 65 00 00 00 66 00 00 00 c...d...e...f... 67 00 00 00 68 00 00 00 69 00 00 00 6a 00 00 00 g...h...i...j... 6b 00 00 00 6c 00 00 00 6d 00 00 00 6e 00 00 00 k...l...m...n... 6f 00 00 00 70 00 00 00 71 00 00 00 72 00 00 00 o...p...q...r... 73 00 00 00 74 00 00 00 75 00 00 00 76 00 00 00 s...t...u...v... 77 00 00 00 78 00 00 00 79 00 00 00 7a 00 00 00 w...x...y...z... 7b 00 00 00 7c 00 00 00 7d 00 00 00 7e 00 00 00 {...|...}...~... Strike any key ... Rec 4 7f 00 00 00 80 00 00 00 00 00 6e 6f 72 66 6f 6c ..........norfol 6b 20 70 75 62 20 31 30 20 6d 69 6c 65 72 00 00 k pub 10 miler.. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 04 01 67 75 69 6c 66 6f ..........guilfo 72 64 20 35 6b 00 00 00 00 00 00 00 00 00 00 00 rd 5k........... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ Rec 5 00 00 00 00 00 00 00 00 02 05 70 65 6f 70 6c 65 ..........people 73 20 66 6f 72 65 73 74 20 38 2e 35 00 00 00 00 s forest 8.5.... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 66 72 6f 73 74 79 ..........frosty 20 35 6b 20 67 75 69 6c 66 6f 72 64 00 00 00 00 5k guilford.... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ Strike any key ... Rec 6 00 00 00 00 00 00 00 00 00 00 72 61 63 65 20 61 ..........race a 72 6f 75 6e 64 20 74 68 65 20 6c 61 6b 65 20 33 round the lake 3 2e 36 20 6d 69 6c 65 00 00 00 00 00 00 00 00 00 .6 mile......... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ Rec 67 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ Strike any key ... Rec 68 00 00 00 00 00 00 00 00 ........ done