TOCI

Description	Denotes an individual entry within a table of contents, linking to a specific section or topic in the document.
Namespace	1.7
Category	grouping

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.

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 'TOCI' element in Well-Tagged PDF is an interactive Table of Contents that not only lists document sections but also provides clickable links for navigation.

It should be fully integrated into the structure tree with active, clearly defined links that allow for dynamic navigation and content reflow.

PDFUA:

In PDF/UA, the 'TOCI' element ensures that the interactive table of contents is accessible. It must support keyboard navigation and be fully tagged so that assistive technologies can activate the links.

Interactive TOC entries must include descriptive labels and proper associations to the corresponding sections, ensuring a seamless navigational experience for users with disabilities.