2015-03-24 10:44:48.837 SDKLauncher-iOS[2135:209217] Request: file:///private/var/mobile/Containers/Bundle/Application/09A8C37D-532B-43BE-A752-EABE857331CB/SDKLauncher-iOS.app/reader.html
2015-03-24 10:44:49.114 SDKLauncher-iOS[2135:209217] Request: epubobjc:readerDidInitialize
2015-03-24 10:44:49.130 SDKLauncher-iOS[2135:209217] Request: about:blank
2015-03-24 10:44:49.210 SDKLauncher-iOS[2135:209217] Request: epubobjc:settingsDidApply
2015-03-24 10:44:49.233 SDKLauncher-iOS[2135:209217] Request: about:blank
2015-03-24 10:44:49.254 SDKLauncher-iOS[2135:209217] Request: http://127.0.0.1:55661/spi-ad.xhtml
2015-03-24 10:44:49.490 SDKLauncher-iOS[2135:209217] Request: epubobjc:pageDidChange?q={"isRightToLeft":false,"isFixedLayout":false,"spineItemCount":22,"openPages":[{"spineItemPageIndex":0,"spineItemPageCount":1,"idref":"spi_ad","spineItemIndex":1}],"canGoLeft_":false,"canGoRight_":true}
2015-03-24 10:44:54.911 SDKLauncher-iOS[2135:209217] Running open next script
2015-03-24 10:44:54.931 SDKLauncher-iOS[2135:209217] Request: about:blank
2015-03-24 10:44:54.937 SDKLauncher-iOS[2135:209217] Ran open next script
2015-03-24 10:44:54.965 SDKLauncher-iOS[2135:209217] Request: epubobjc:pageDidChange?q={"isRightToLeft":false,"isFixedLayout":false,"spineItemCount":22,"openPages":[{"spineItemPageIndex":0,"spineItemPageCount":1,"idref":"spi_ad","spineItemIndex":1}],"canGoLeft_":false,"canGoRight_":true}
2015-03-24 10:44:55.004 SDKLauncher-iOS[2135:209217] Request: http://127.0.0.1:55661/index.xhtml
2015-03-24 10:44:55.230 SDKLauncher-iOS[2135:209217] Request: epubobjc:pageDidChange?q={"isRightToLeft":false,"isFixedLayout":false,"spineItemCount":22,"openPages":[{"spineItemPageIndex":0,"spineItemPageCount":1,"idref":"id-id2442754","spineItemIndex":2}],"canGoLeft_":true,"canGoRight_":true}
You'll notice one call to the open next script and two pageDidChange events.