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Click on the Page Thumbnails button in the Navigation Pane.
Select all the thumbnails in the Navigation Pane (Control + click).
Right-click one of the thumbnails and choose Page Properties.
In the Tab Order tab, ensure the option Use Document Structure is selected (this is the default), then click OK.
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Open the Tags Pane in the Navigation Pane.Open , select the Options Button .
Select and select Find.
The Find Element box will appear. In the Find drop-down menu, select Unmarked Content.
Select the option for Search Document (or Search Page if you want to do this page by page).
Click Find.
Acrobat will then show you untagged content items with a bright pink border around them. Click on the Tag button.
Click Next in the dialog box to see each unmarked content item as Acrobat shows them one by one.
Tag the items as needed and place them in a Paragraph Tag.
Delete Empty Tags:
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