Part
| Description | Defines a grouping element for content that has a semantic purpose unrelated to the document’s heading hierarchy, allowing segmentation of content into distinct parts. |
|---|---|
| Namespace | 1.7 2.0 |
| Category | grouping |
Attributes
Specifies how the element is placed relative to surrounding content (e.g., block-level or inline flow).
Defines the direction of text flow (e.g., left-to-right, right-to-left, or vertical).
Sets the background color for the element’s content area.
Specifies the color of the border around the element.
Indicates the style of the border (e.g., solid, dashed, dotted).
Defines the thickness of the border line in user space units (such as points).
Determines the space between the element’s border (or boundary) and its inner content.
Applies the primary color (fill or stroke) for the text or graphic content.
Specifies the number of columns for multi-column layouts.
Indicates the spacing (gap) between columns in multi-column layouts.
Specifies the width of each column in multi-column layouts.
Main indicator of type. This semantic association allows tools to present and support interaction with the object in a manner that is consistent with user expectations about other objects of that type.
Differences
Well tagged PDF:
The 'Part' element in Well-Tagged PDF is used to mark a major subdivision of a document—often representing a volume or large section—to enhance reusability and interoperability. It groups related content that can be independently extracted or reflowed.
For Well-Tagged PDF, the 'Part' element should be clearly defined with a consistent role and logical boundaries. It must be integrated within a comprehensive structure tree, enabling precise content extraction and reflow without necessarily requiring additional accessibility metadata beyond a clear grouping.
PDFUA:
In PDF/UA, the 'Part' element denotes a primary division of the document that is essential for accessibility. It helps users navigate large documents by breaking them into semantically distinct segments.
PDF/UA mandates that the 'Part' element is used in a semantically meaningful way, typically accompanied by a title or alternate text. This ensures that assistive technologies can correctly interpret and navigate the document’s hierarchy. The element must be part of a fully tagged, accessible structure tree where each 'Part' is clearly delineated.
Use cases
Part structure representing an advertising section
Try itTag Relationships
Click on any tag to view its details.