A "one-click" feature that recognizes any numbered segment and automatically triggers the extraction of the entire set.
Instead of giving a generic "Format Error," it informs the user exactly which part is missing (e.g., "Part 1 is missing, please download it to extract"). 2. "Part-Specific" Integrity Checker
It uses the CRC (Cyclic Redundancy Check) headers within the .003 file to ensure that this specific segment was downloaded correctly.