TBody

Description	Represents the main body of a table, grouping together the rows that contain the primary data entries.
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 'TBody' element groups the main content rows of a table in Well-Tagged PDF. It organizes the bulk of the table’s data.

It must be clearly separated from the header and footer sections, and should encapsulate all standard rows ('TR') containing data cells.

PDFUA:

In PDF/UA, the 'TBody' element is critical for accessibility as it defines the primary area where data is presented.

It should be tagged distinctly and associated with the table header and footer elements to ensure a consistent reading order for assistive technologies.