Viewing Documents
Visual Aspects of Viewing:
There are several options for viewing the pages of a document. These options only affect how the document is presented on-screen. They do not affect final PDF output.
Single Sheets - Facing Sheets
When Single Sheets is selected the document displays a single page per row. When Facing Sheets is selected the document displays two pages side-by-side. Facing Sheets can be useful for instance to view the two halves of a spread side by side.


Continuous Display
When Continuous Display is active the document displays in continuous mode vertically. Vertical scrolling applies to the entire document. When inactive only a single row of pages is shown at a time. (One page if Single Sheets is active, two pages if Facing Sheets is active.) It is nonetheless possible to scroll vertically through the document using the scroll-wheel on a mouse, or using the page up and page down buttons on the keyboard.


Book Mode
When Book Mode is active, and Facing Sheets is selected, the view displays the first page by itself (like a book cover), and two pages side by side on subsequent rows. This is useful for controlling the order of the page spreads: odd pages left, or even pages left.


Sheet Breaks
Sometimes a document’s pages are meant to be assembled seamlessly (for instance architectural plans printed across several sheets of paper). To preview pages in such a way turn off the display of Sheet Breaks.

Display Box Bounds
PDF documents that define secondary display boxes (like crop and trim boxes) can be displayed with a preview of those boxes printed over each page. There are four types of boxes, and the display of each one can be turned on and off individually, or you can choose to turn the display of all boxes on or off with a single command.

Interactive Aspects of Viewing:
Work Modes
There are several actions you may want to perform on the displayed document. To make it easy to perform certain actions on a page without interference from other features PDFClerk has three different work modes, each suited to a particular kind of goal.
Text
In text mode you can select text on the PDF page. Note that this applies only to text that is part of the page stream. To put it differently, it applies only to text that is burned into the page (which is al text you see that is not part of an annotation, so usually all or most text).

Edit Dynamic Annotations
To edit dynamic annotations activate the Edit Dynamic Annotations mode. In this mode you cannot select text or static annotations.

Edit Static Annotations
To edit static annotations activate the Edit Static Annotations mode. In this mode you cannot select text or dynamic annotations.

Deactivating Links
To make it easier to work with text that is hyper-linked you can deactivate hyperlinks with the Tools->Work Mode->Deactivate Links menu. When deactivated clicking on links will not jump the the link’s target location.