You can open a document using any one of the following ways:
Double-click on the file icon in the File Manager.
Double clicking opens PDF, PostScript, .djvu, .dvi and Comic Book Archive files in the Document Viewer by default.
Right-click on a file icon in the File Manager and click Open With ▸ Document Viewer.
If a Document View window is already open you can:
drag a file icon into the window from the File Manager. The new file will open in a new window (provided the file is of a file type supported by Document Viewer).
choose File ▸ Open from the Menubar. In the Open Document dialog box, choose the file you wish to open, and click Open. The file will open in a new window.
