Apple Keynote '09 - Manual (Page 76)

To replace an item you’ve already placed in a media placeholder, drag a new file to it. You
don’t have to delete the old file first.
To reposition a media placeholder on the slide canvas, drag the placeholder to where
m
you want.
To remove a media placeholder from the slide canvas, select the placeholder and press
m
the Delete key.
To learn about creating media placeholders, or converting them to non-placeholders,
in order to customize a master slide, see “Defining Media Placeholders” on page 234.
Masking (Cropping) Images
You can crop images without actually changing the image files by masking the edges
to get rid of unwanted parts or to change the outline of the image. If you don’t specify
a shape for the mask, by default Keynote uses a rectangular mask, but you can use
any shape available in Keynote, including a custom shape that you’ve created with the
Draw tool, to mask the edges of your image.
To mask an image with a rectangle:
1 Import the image you want to mask.
2 Select the image and then click the Mask button in the toolbar (or choose
Format > Mask).
A mask appears over the image, and some controls appear.
Drag the image to
position the part you
want to show.
Drag the slider to resize
the image.
Click to show or hide the
area outside the mask.
Drag the selection handles
to resize the mask.
3 To resize the image, drag the slider above the Edit Mask button.
4 Refine the mask by doing any of the following:
 To resize the mask, drag the selection handles on the mask shape. To constrain the
mask’s proportions, hold down the Shift key as you drag.
 To rotate the mask, hold down the Command key as you drag a corner selection
handle on the mask.
76 Chapter 5 Working with Images, Shapes, and Other Objects