I was curious if anyone has had any experience with accomplishing this in Sencha Touch 1.1 . I want the user to be able to access a .PDF file represented as maybe a link or an icon which will effectively call a third-party application capable of viewing/editing PDF files(given the platform) and any/all changes will persist on the device or machine so that if the user "opened" the file via the Sencha application again, it would automatically call/run the PDF application and show the changes made from the previous visit.