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Go Back and Forth Fast in Preview

If you're reading a PDF in Apple's Preview software, and you follow a bookmark or an internal link to move around within the PDF, you can quickly return to where you were by pressing the keyboard shortcut Command-[ (that's Command-Left Bracket). Or, you can choose Go > Back.

The command works iteratively, so you can go back to just the previously viewed page or if you issue the command again, to the page before that, and so on. There's also an equivalent Go > Forward (Command-]).

 
 

Dennis Ritchie, Father of C, Passed Away October 8th

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Another giant of the computer industry died last week. Although nowhere near as famous as Steve Jobs, Dennis Ritchie was responsible for two of the key technologies that have made the modern Internet possible, his C programming language and the Unix operating system he built with Ken Thompson at Bell Labs. Ritchie was also the co-author, with Brian Kernighan, of the definitive book about C, “The C Programming Language,” which became so well known among programmers that it is usually referred to by the authors' initials: “K&R”. Wired has more about Ritchie’s life.favicon follow link