How to Change the Size of a Slide on Keynote

Open a new or existing Keynote presentation.
Click on the blue 'Inspector' button in the toolbar. Click the 'Document' pane then click the 'Document' button.
Click the 'Slide size' pull-down menu at the bottom of the window. Select the desired slide size from the pre-sets or click 'Custom Slide Size' to enter the desired width and height in pixels. Click 'OK' to confirm the size.
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How to Lock iPhoto Albums (5 Steps)

Click the iPhoto icon in your dock to launch the program.
Select 'iPhoto' from the menu, then scroll to 'Preferences.'
Click the 'Sharing' tab in the toolbar.
Check the box next to 'Share My Photos.' Choose to share your entire library, or select certain albums by clicking the radial button next to your preference.
Check the box next to 'Require password,' and type your password in the text box.
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How to Annotate a PDF File (26 Steps)

Open Adobe Acrobat.
Open your PDF document.
Select the 'View' menu, click 'Toolbars' and select 'Comment and Markup.' The toolbar will appear at the top of your document.
Click 'Sticky Note' in the 'Comment and Markup' toolbar to add comments.
Click on the location in your document where you want to insert comments. A yellow box labeled 'Sticky Note' will appear to the side of your document as well as a smaller sticky note icon in your document.
Adjust the location of the sticky note by clicking the yellow border and dragging the note.
Click 'Options' on the sticky note border. Select 'Properties' to change the shape and color of your sticky note and click 'OK.'
Click inside the large sticky note to type your comments or paste text from another document.
Click the minimize button in the top upper-right corner of the sticky note when complete to return to your document.
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How to Display Powerpoint on a Mac Air Book With an LCD Projector

Connect the LCD projector to the VGA port on the side of the MacBook air. The VGA port is a square port that mirrors the end of the cable itself. Select 'System Preferences' from the toolbar and click 'Displays' from the available options.
Select 'Detect Displays' from the next screen and select the LCD projector from the available options. The MacBook Air screen will be displayed on the projection screen.
Open Microsoft PowerPoint and allow the main page to fully load. Click 'Open' from the 'File' menu and select the presentation that you would like to project. The presentation will load on screen.
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How to Change the Settings on a Cydia Installer

Tap the 'Cydia' application on your iOS device's home screen. Allow it a minute to refresh the content.
Tap the 'Manage' tab along the bottom toolbar.
Select 'Settings' in the upper-left corner of the 'Manage' screen. Select the type of user you are. Cydia automatically adjusts the available in-store content based on your needs. Select 'User,' 'Hacker' or 'Developer.' Click 'Done.'
Tap 'Packages' to view all Cydia-installed applications. Tap on an application, then 'Modify.' Selecting 'Modify' allows you to remove or upgrade the application. Tap the back arrow in the upper-left corner to navigate back to the 'Manage' screen.
Tap 'Sources' to view a list of all installed application repositories. Tap 'Edit' in the upper-right corner of the screen to add or delete sources. Click 'Done' to save the changes.
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