TR

Description	Defines a table row that groups together table cells in a horizontal line within a table.
Namespace	1.7 2.0
Category	block

Attributes

Placement

Specifies how the element is placed relative to surrounding content (e.g., block-level or inline flow).

WritingMode

Defines the direction of text flow (e.g., left-to-right, right-to-left, or vertical).

BackgroundColor

Sets the background color for the element’s content area.

BorderColor

Specifies the color of the border around the element.

BorderStyle

Indicates the style of the border (e.g., solid, dashed, dotted).

BorderThickness

Defines the thickness of the border line in user space units (such as points).

Padding

Determines the space between the element’s border (or boundary) and its inner content.

Color

Applies the primary color (fill or stroke) for the text or graphic content.

BBox

Width

Declares an explicit width for the element in user space units.

Height

Declares an explicit height for the element in user space units.

role

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 'TR' element denotes a table row in Well-Tagged PDF, grouping cells horizontally.

Each table row should be enclosed within a 'TR' element, and rows must be maintained in the proper sequential order to preserve the table’s logical structure.

PDFUA:

In PDF/UA, the 'TR' element defines the boundaries of a table row, which is essential for assistive technologies to interpret the table structure accurately.

Rows must be clearly tagged and linked with their respective header information to support accurate navigation and reading order.