Adobe InDesign CC 2015 - Manual (Page 429)

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Interactivity
Last updated 6/6/2015
Tag page items manually
1 Choose Window > Utilities > Tags to display the Tags panel.
2 Choose View > Structure > Show Structure to display the Structure pane, to the left of the Document window.
3 Choose Add Untagged Items from the Structure pane menu.
4 Select a page item in the document.
5 Select a tag in the Tags panel. Note the following suggested uses for certain imported tags:
Artifact The Artifact tag lets you hide page items, such as page numbers or unimportant objects, when viewing the
exported PDF file in Reflow view, which displays only tagged items; see your Adobe Acrobat documentation. This
is especially useful for viewing PDF files on a handheld device or in other PDF readers.
Cell Use this tag for table cells.
Figure Use this tag for placed graphics. The Figure tag is applied to all untagged graphics placed in your document
when you choose Add Untagged Items.
Paragraph tags (P, H, H1–H6) These tags have no effect on the exported PDF text when viewed in Reflow view.
However, they can be useful in some situations when exporting a PDF file to HTML format.
Story structure tag (PDF)Story Use this tag for stories. The Story tag is applied to all untagged text frames when you
choose Add Untagged Items. For example, suppose you have an InDesign document formatted with three paragraph
styles: Head1, Head2, and Body. First, map these paragraph styles to the H1, H2, and P tags, respectively. Next,
export to PDF. Finally, when you export the PDF document to HTML or XML in Acrobat, the paragraphs tagged as
H1, H2, and P will display appropriately (such as with large bold letters in H1) in a web browser. For information
on exporting the PDF document to HTML or XML, see your Adobe Acrobat documentation.
Label graphics for use with screen-reader software
If you want screen readers to describe graphical elements that illustrate important concepts in the document, you must
provide the description. Figures and multimedia aren’t recognized or read by a screen reader unless you add alternate
text to the tag properties.