1.14 Viewing PDF Files with KPDFPDF is probably one of more important document formats. KPDF is a KDE programthat can view and print them.Start KPDF by pressing Alt + F2 and entering kpdf. Load a PDF file with File > Open.KPDF displays it in its main window. On the left side, there is a sidebar with thumbnailsand a contents view. Thumbnails give an overview of the page. The contents viewcontains bookmarks to navigate in your document. Sometimes it is empty, meaningbookmarks are not supported by this PDF.To view two pages in the main window, select View > Two Pages. The view dependson what last two options you activate in the View menu.Another nice option is to select the area in which you are interested with the select toolfrom the toolbar. Draw a rectangle and choose from the pop-up menu whether you needthe selected area as text or as a graphic. It is copied to the clipboard. You can even savethe area to a file.1.15 Controlling Sound with KMixYaST identifies and configures the sound cards of your computer automatically. Other-wise, start the YaST Hardware module and configure the sound card manually. Whenyour sound card has been configured, you can control the volume and balance of thesound with a mixer.TIP: Starting the MixerIf the mixer icon (a loudspeaker symbol) is not visible in the panel of yourdesktop, press Alt + F2 and enter kmix or start the mixer from the main menu.You usually find it under Volume Control.By default, clicking the KMix icon in the system tray shows the master controller withwhich to increase or decrease the overall volume. To switch off the sound, click thegreen LED, which darkens when it is muted. Toggle this option by clicking the LEDagain. To fine-tune your sound settings for several channels, right-click the KMix iconand select Show Mixer Window. In the main window, you can configure Output, Input,and Switches. Each of the devices featured there has its own context menu that is opened38 KDE User Guide
