This is a port of Apple's ZoomingPDFViewer (original written in ObjectiveC) available from: http://developer.apple.com/library/ios/#samplecode/ZoomingPDFViewer/Introduction/Intro.html#//apple_ref/doc/uid/DTS40010281
The Tamarin.pdf file was generated (Download as PDF) from: http://en.wikipedia.org/wiki/Tamarin Text is available under the Creative Commons Attribution-ShareAlike License [1]; additional terms may apply. See Terms of use [2] for details.
[1] http://en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_Attribution-ShareAlike_3.0_Unported_License [2] http://wikimediafoundation.org/wiki/Terms_of_use
Sebastien Pouliot