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Glossary

Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.

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PDF Form(also: PDF Fillable Form, Interactive PDF Form, AcroForm)
A PDF document that contains interactive form fields — text boxes, checkboxes, radio buttons, signatures, dropdowns — that users can fill in and submit electronically, rather than a static PDF meant only for reading. PDF forms are widely used for government applications,…
PDF Tagging(also: Tagged PDF, PDF Tags)
The process of adding a logical structure tree to a PDF so that assistive technologies can interpret the document's content, reading order, and semantics independently of its visual layout. Tags label each piece of content with its role — heading, paragraph, list item, figure,…

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