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About file compression

Some of our downloadable files are in a “compressed” format, meaning that they have been compacted so they can travel more quickly across networks. After they arrive at your location — either your computer or on a network drive — they must be decompressed before you can view or install their contents.

The decompression procedure varies depending on your operating system — Mac OS or Windows.

Mac OS

In addition to being compressed, Mac OS files are BinHex-encoded, which better protects the files as they download. This is indicated by the “.hqx” file extension. Utilities, such as Aladdin’s Stuffit Expander, are available that will un-encode and decompress the file in a single step. To decompress a file, open the utility, select the compressed file you want to decompress, and specify where you want to save the decompressed contents.

Windows

Most compressed Windows files are downloaded as self-extracting files, meaning they will decompress themselves automatically when selected. To decompress these files, locate the file using Windows Explorer, and then double-click the file name. Some files may be compressed in a “.zip” format; utilities such as WinZip are available to decompress such files.