Using an accessible slide layout ensures that:
The Selection Pane is an essential tool used to manage the accessibility of your PPT slide layouts. You can:
How to open the Selection Pane (Figure 1): Home tab → Editing tab → select Select drop-down arrow → Select Selection Pane.

Slide layout refers to slide content and organization. You choose a slide layout template whenever you add a new slide (Figure 2) or change the layout using the "Layout" drop-down option.
Screen reader software relies on slide layout for instructions on what to communicate to the user, so always use the Selection Pane (Figure 3) to adjust the following:
Slide reading order tells assistive technology the order to present slide content to users (WCAG 1.3.2, A). You can adjust reading order using the Selection Pane. The Selection Pane lists all slide items and their reading order in a linear manner, meant to be read in order from bottom to top (see Figure 4).

Figure 4. The added numbers show how slide content corresponds to Selection Pane items, which are ordered from bottom to top. “Title 1” is the first item on the slide and “TextBox-Gummy worms” is the last item on the slide.
Use the Selection Pane to set reading order and ensure that slide items are listed in the correct order that users should encounter them.
To rearrange slide items, click and drag the item within the Selection Pane. Remember, slide order in the Selection Pane goes from bottom to top.
To test the order in which someone using assistive technology would encounter slide items, click on a slide, then press the “tab” key on the keyboard. This will tab through the items using their set order, highlighting each item as you tab.
Every item on a PPT slide has a semantic label, or a label that tells assistive technology what type of content it is and and what to tell the user about it. In HTML, these labels are commonly referred to as “tags.” As seen in Figure 5, slide items will be automatically labeled by their tag type, which you can see in the Selection Pane.
It’s important to use the correct tags for items so that assistive technology communicates this information to users. (WCAG 1.3.1, A)
Note that while you’re able to rename a label’s text for organizational purposes, this does not change the item’s tag type.

Figure 5
There are several types of tags. The ones you may encounter most frequently include:
| Content Type | Label in Selection Pane | HTML & PDF Equivalent |
|---|---|---|
| Image or graphic |
|
<figure> |
| Title |
|
<H1> |
| Text boxes |
|
<p> |
| Table |
|
<table> |
Note that the tag "Content Placeholder" may be assigned to a variety of template boxes and that's okay; they'll still be tagged appropriately.
Item tags are generated by PowerPoint. Here’s how to ensure you’re using the proper tags:
Use accessible PowerPoint templates with pre-formatted slides.
Check slide reading order using the Selection Pane, then test it using the “tab” key. Adjust the order as needed.
Add additional slide items properly to avoid problems later.
Check item tags using the Selection Pane.
Use a unique Title-tagged box on every slide.