How to Scroll and Click Using the Trackpad on a Mac Laptop

Open your System Preferences by clicking on the Apple icon on the far left side of the menu bar at the top of your screen and selecting 'System Preferences' from the drop-down menu.
Select 'Keyboard & Mouse' from the System Preferences screen.
Make sure that 'Trackpad' is selected in the bar at the top of the Keyboard and Mouse screen.
Locate the 'Trackpad Gestures' section and check the box next to 'Use two fingers to scroll,' which will allow you to scroll through a webpage or document by placing two fingers on your trackpad and moving both, or moving one while holding the other still, in the direction you want to scroll.
Use the sliding arrow under 'Scrolling Speed' to change the speed at which the finger-scrolling option reacts to your movements. Find a speed you are comfortable with.
Check the box next to 'Allow horizontal scrolling' if you would like to be able to scroll the page from left to right using the trackpad as well as from top to bottom.
Check the box next to 'Clicking' so that you can click using your trackpad by tapping it with your finger. To double-click you tap the trackpad twice. You can also check the box next to 'Dragging' (right below the 'Clicking' box) to enable dragging of objects and windows on your computer screen using only your trackpad. To drag using your trackpad you tap it twice with your finger when the cursor is over the object you would like to drag, and on the second tap don't lift your finger; instead, move it to where you would like to drag the object you have selected. Tap the trackpad once more to release the object.
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How to Scroll an iPhone in VoiceOver

Hold the iPhone in one hand with the display facing you.
Press three fingers together on your other hand.
Press and drag the three fingers together simultaneously across the iPhone’s multi-touch display to scroll.
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How to Use a Samsung Monitor With a Mac

Plug one end of the DVI connection cable into the video input socket of the Samsung monitor. Plug the other end of the DVI connection cable into the second video output socket on the back of the Mac Pro. Screw down the locking screws on both ends of the DVI connection cable with your fingers. Turn on the Samsung monitor.
Go to the “Apple” menu. Select “System Preferences” from the drop-down menu. Select the “Display” icon from beneath the “Hardware” tab on the window that appears.
Click the “Detect Displays” button at the bottom of the window that appears on the primary monitor being used with the Mac Pro.
Click the “Display” tab on the window that appears on the Samsung monitor. Select the highest resolution that is available from within the “Resolutions” column on the left side of the window.
Click the “Color” tab at the top of the window next to the “Display” tab. Select the name of a Samsung monitor from the list of choices presented in the “Display Profile” column that is in the left side of the window.
Close the windows on the monitors by clicking the red button at the upper left corner of the window that is on the primary monitor’s screen.
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How to Pan in AutoCAD With a Touchpad Mac

Start AutoCAD and open your project.
Place two fingers on the touchpad and drag them to pan the project view. You can move your fingers in any direction, as long as both fingers remain on the trackpad.
Hold down the space bar, place one finger on the touchpad and drag it around to pan the project view. As when using the two-fingers method of panning, you can move your finger in any direction on the touchpad as long as you hold down the space bar.
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