Use the Property Inspector (Windows > Properties) of the slides to edit them.
Change background color of slides
Using images in the background
If the library does not contain any image, you will be prompted to browse for the image. Navigate to the location of the image, select it, and click Open.
If the library already contains images, you will be prompted to choose an image from the library. Select an image and click OK. To use an image that does not exist in the library, click Import in the Select Image from Library dialog box.
Editing background images
Click the edit icon in the General section of the slide’s Property Inspector. Edit the required attributes of the image in the Resize/Crop Image dialog box.
Add plain text to a slide
As you edit a project, you may want to add some text to the slide but not have the text appear as a text caption over the slide. There is an easy trick you can use to add plain text to a slide: simply add the text as a transparent text caption.
If you create a transparent caption, avoid underlining text. Underlined text might affect the quality of the text.
Edit text recorded on a slide
When you record text being typed, a new slide is created for every line break. Each line of typed text is treated as a single object and appears as a separate layer on the Timeline. You can replace text recorded on a slide with new text along with typing effects. For example, if you have recorded text being typed in an editing program and you want to change the recorded text on the slide later, you can use this option.
Before you record text being typed, ensure that the option to record keystrokes has been enabled. For more information, see Set global recording preferences.
It is easier to identify and keep track of slides using their label instead of their slide number. The label of the slide appears under the slide.
To label a slide, open the slide and enter a name for it in the Label text box of the Property Inspector.