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Initial release	Sep 8, 2010
Current version (1.7)	Dec 22, 2010

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PDF Reader 4 is the ultimate PDF Reader for your iPad, iPhone and iPod touch. With its intuitive user interface, reading PDF documents becomes easy, efficient and enjoyable. It can also help you organize your documents. Below are some salient features highlighted:

*** Support Large PDF Documents ***
PDF Reader 4 can handle large PDF documents of more than 600 pages. It is highly optimized such that the scrolling speed and smoothness can be maintained for large documents.

*** Allow Drag N’ Drop ***
You can drag and drop files and folders. It simplifies the steps to move, copy files and create shortcuts. (for iPad only)

*** Enable Realistic Page-Flipping ***
If your document can fit into one screen, you can turn on Page Lock to lock the scroll position and zoom level. After that, you can do a finger swipe to turn to next or previous page, with realistic page-flipping animation effects!
 
  *** Incorporate Full Built-in Web Browser ***
The web browser in PDF Reader 4 allows you to open, bookmark web pages or set them as home page. You can also download any files from the web browser and save them for later use.

*** Allow Flexible File Organization ***
You can create new folders, rename, move, cut, copy, paste or delete files. You can also handle multiple files at a time.

*** Allow Easy Import of Documents ***
There are 3 ways to import PDF Documents:
- By dragging files in iTunes from your desktop
- By opening attachments in zip
- Or by downloading files directly from built-in web browser

*** Enable Bluetooth Sharing ***
You can share any file in PDF Reader 4 from one iDevice to another via Bluetooth. You can also email any file and folder to anyone with our built-in email client.

*** Protect Your Eyes With Night Mode ***
The background of the PDF documents is usually white. Your eyes can get tired very easily if you read the documents for a long time under dim light. The Night Mode can help protect your eyes by turning the white background black.

Additional Features:
- Portrait and Landscape mode
- Pinch to zoom
- Swipe to go to next/previous page
- Zip and unzip files
- Open link directly from PDF documents
- Show progress of file-downloading
- Built-in Google search for web browsing
- Thumbnail of pages
- Create shortcuts of files or folders
- Jump to specific page by index
- Recent file list
- Option to lock the scrolling direction when you are dragging across the document
- Auto save and return to the place where you left off