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To open Slide Master, select the View tab > Slide Master. This view allows you to create accessible layouts that meet the needs of the presentation while maintaining a proper heading structure and reading order. All of these changes are possible in the Slide Master view. You can also make changes to a specific slide layout, or even create new custom layouts. It is possible to make changes to all slides within a presentation, like changing the text size of all slide titles.
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If in doubt, Microsoft has identified several templates that are optimized for accessibility. While this doesn't guarantee accessibility, it increases the likelihood of finding a good template. Add the word "accessible" to the search for templates that are tagged as "accessible" by the creator. You can search for a template by selecting File > New, and then describing the template in the Search field. In addition to built-in and custom themes, there are thousands of templates available for download.
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If the presentation will be viewed on a projector, the contrast and readability may need to be even more pronounced. Be sure to choose a theme with good contrast and with simple backgrounds.
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Some of these templates have low contrast between slide text and the slide background, and a few may also have busy backgrounds that can make text even more difficult to read. The Design tab contains many built-in Themes and color Variants that can be used to change the look of a presentation, as well as the ability to create custom themes The first step in creating a PowerPoint presentation is choosing a slide theme or template.
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