When it comes to file compression, the new StuffIt Deluxe 2.0 provides nearly every feature available in competing packages without sacrificing an interface that’s unmatched in terms of simplicity and ease of use.
Most useful among StuffIt Deluxe 2.0’s enhancements are self-extracting archives. As with competitors Diamond and Compactor, double-clicking on “selfunstuffing” files compressed with StuffIt decompresses them automatically, without the need for the StuffIt application. Although this self-extracting feature typically adds about 20K of overhead to an archive, it guarantees that recipients of StuffIt-compressed files will be able to decompress them.
Version 2.0 opens stuffed documents directly in theiroriginal applications when you hold down the Option key while double-clicking on a file. This feature mimics an existing DiskDoubler feature. And although StuffIt archives don’t normally appear in applications’ Open and Save As dialog boxes, the addition of the $79.95 Shortcut 1.5 (another Aladdin product) fills that gap, allowing archives to behave like normal files: Doubleclicking on a stuffed file unstuffs and opens it. Furthermore, StuffIt doesn't automatically rccompress previously compressed files when you quit an application. However, Shortcut provides a check box in the Save As dialog box that lets you add this function.
Aladdin has added two new compression settings to StuffIt’s Options menu: Best Guess and Optimal. The company strongly recommends the new Best Guess setting for most users, and we agree. StuffIt's compression settings represent a variety of trade-offs between speed and file size: The faster the compression, the larger the file size. Best Guess intelligently chooses the best compromise for you from among the program’s numerous settings. If speed is your primary concern, you'll find version 2.0's Optimal setting an improvement in speed (and file size) over the program's existing Fast setting.
With version 2.0, you can use two new DAs to stuff and unstuff files without launching the StuffIt Deluxe application.
Also included are Stuff and Unstuff functions for HyperCard XCMDs, an XTND that allows MacWrite II or On Location to read and list the contents of archived files, and Stuff and Unstuff extensions for QuicKeys 2.0.
Lewis, Darryl. (September 1991). StuffIt Deluxe 2.0. MacUser. (pg. 87).