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<p>Links are highlighted by red frames (if enabled in the settings). Left-click on a link to show the linked page or open the linked URL in the default browser (if enabled in the settings). Hovering over a link displays its destination as a tool tip.</p>
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<p>The source of a position in the document is requested by double-clicking which opens the first matching <em>SyncTeX</em> node using the source editor.</p>
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<p>To <em>copy texts or images</em>, hold <b>SHIFT</b>, click and hold the left mouse button to drag a frame around the area to copy. Once the mouse button is released, a pop-up menu is displayed to select whether to copy texts or images into the clipboard.</p>
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<p>To <em>add annotations</em>, hold <b>CTRL</b>, click and hold the left mouse button to drag a frame around the region of interest. Once the mouse button is released, a pop-up menu is displayed to select whether to add text or highlight annotations. Left-click to <em>edit annotations</em>. Right-click to <em>remove annotations</em>. (Adding and removing annotations requires version 0.20 or higher of the Poppler library.) Hovering over an annotation displays its contents as a tool tip.</p>
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<h3><a name="settings">Settings</a> <a href="#top">↑</a></h3>
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<p>Interface settings</p>
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<p>Behaviour settings</p>
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<li><b>Open URL</b> Determines whether links to URL are opened in the default browser.</li>
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<li><b>Restore bookmarks</b> If enabled, bookmarks are saved on ending the program and restored on restart.</li>
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<li><b>Synchronize presentation</b> If enabled, the main view and the presentation view will display the same page.</li>
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<li><b>Presentation screen</b> The index of the screen to display the presentation view on. </li>
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<li><b>Tab position</b> Defines at which edge of the main view tabs will be displayed.</li>
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<li><b>Tab visibility</b> Determines whether tabs will be displayed if less than two documents are opened.</li>
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<li><b>File tool bar</b> Defines which actions are visible in the file tool bar. Available actions are openInNewTab, open, refresh, saveCopy and print. (Effective after restart.)</li>
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<li><b>Edit tool bar</b> Defines which actions are visible in the edit tool bar. Available actions are currentPage, previousPage, nextPage, firstPage, lastPage, jumpToPage, search, copyToClipboard and addAnnotation. (Effective after restart.)</li>
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<li><b>View tool bar</b> Defines which actions are visible in the view tool bar. Available action are scaleFactor, zoomIn, zoomOut, continuousMode, twoPagesMode, twoPagesWithCoverPageMode, originalSize, fitToPageWidth, fitToPageSize, rotateLeft, rotateRight, fullscreen and presentation. (Effective after restart.)</li>
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<li><b>Zoom modifiers</b> The keyboard modifiers to zoom using the mouse wheel in the main view.</li>
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<li><b>Rotate modifiers</b> The keyboard modifiers to rotate using the mouse wheel in the main view.</li>
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<li><b>Horizontal modifiers</b> The keyboard modifiers to scroll horizontally using the mouse wheel in the main view.</li>
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<li><b>Copy modifiers</b> The keyboard modifiers to copy texts or images from a page.</li>
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<li><b>Annotate modifiers</b> The keyboard modifiers to add annotations to a page.</li>
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<li><b>Source editor</b> The program which is started to edit sources. '%1' is replaced by the absolute file path. '%2' resp. '%3' is replaced by line resp. column number.</li>
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<p>Graphics settings</p>
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<li><b>Decorate pages</b> Determines whether pages are set apart from the background.</li>
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<li><b>Decorate links</b> Determines whether links are highlighted by red frames.</li>
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<li><b>Highlight duration</b> Determines the duration of temporary highlights.</li>
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<li><b>Invert colors</b> Determines whether pages are rendered with inverted colors.</li>
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<li><b>Page spacing</b> Determines both vertical and horizontal space displayed between pages.</li>
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<li><b>Thumbnail spacing</b> Determines both vertical and horizontal space displayed between thumbnails.</li>
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<li><b>Prefetch</b> The program will try to render pages that are not yet visible increasing rendering speed at the cost of increased cache usage.</li>
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<p>Interface settings</p>
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<li><b>Tab position</b> Defines at which edge of the main view tabs will be displayed.</li>
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<li><b>Tab visibility</b> Determines whether tabs will be displayed if less than two documents are opened.</li>
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<li><b>File tool bar</b> Defines which actions are visible in the file tool bar. Available actions are openInNewTab, open, refresh, saveCopy and print. (Effective after restart.)</li>
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<li><b>Edit tool bar</b> Defines which actions are visible in the edit tool bar. Available actions are currentPage, previousPage, nextPage, firstPage, lastPage, jumpToPage, search, copyToClipboard and addAnnotation. (Effective after restart.)</li>
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<li><b>View tool bar</b> Defines which actions are visible in the view tool bar. Available action are scaleFactor, zoomIn, zoomOut, continuousMode, twoPagesMode, twoPagesWithCoverPageMode, originalSize, fitToPageWidth, fitToPageSize, rotateLeft, rotateRight, fullscreen and presentation. (Effective after restart.)</li>
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<p>Modifiers settings</p>
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<li><b>Zoom modifiers</b> The keyboard modifiers to zoom using the mouse wheel in the main view.</li>
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<li><b>Rotate modifiers</b> The keyboard modifiers to rotate using the mouse wheel in the main view.</li>
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<li><b>Horizontal modifiers</b> The keyboard modifiers to scroll horizontally using the mouse wheel in the main view.</li>
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<li><b>Copy modifiers</b> The keyboard modifiers to copy texts or images from a page.</li>
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<li><b>Annotate modifiers</b> The keyboard modifiers to add annotations to a page.</li>