an efficient binary archive format

spec

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SPEC.md
··· 52 52 | :--- | :--- | :--- | :--- | 53 53 | `index_offset` | 8 bytes | u64 | Absolute offset to the start of the index | 54 54 | `entry_count` | 4 bytes | u32 | Total number of unique entries in the index | 55 - | `magic` | 4 bytes | u32 | Magic sentinel number 55 + | `magic` | 4 bytes | u32 | Magic sentinel value `62 62 62 62` (ASCII: `bbbb`). 56 56 57 57 --- 58 58