mstamy2/PyPDF2 — pull request #113 by jasonbot (2014-07-01 17:26:35+00:00)
Title: Adjust PageMode constants to reflect PDF spec

I noticed that using the `/UseFullscreen` mode flag wasn't initiating full screen in Acrobat Reader, so I looked into the [Official PDF Reference Spec](https://wwwimages2.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/PDF32000_2008.pdf) (Page 74, Table 28) and found two mode constants were incorrect in PyPDF's implementation. The correct constants are:

| Value | Description |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------|
|**`UseNone`** |Neither document outline nor thumbnail images visible |
|**`UseOutlines`** |Document outline visible |
|**`UseThumbs`** |Thumbnail images visible |
|**`FullScreen`** |Full-screen mode, with no menu bar, window controls, or any other window visible (_`UseFullscreen` in PyPDF2 is incorrect_) |
|**`UseOC`** |_(PDF 1.5)_ Optional content group panel visible |
|**`UseAttachments`**|_(PDF 1.6)_ Attachments panel visible (_`UseAttach` in PyPDF2 is incorrect_) |