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Formula

Description

Encapsulates mathematical expressions or equations, preserving the semantics of technical or scientific formulas.

Namespace
1.7
2.0
Category
grouping
block
inline

Differences

Well tagged PDF:

The 'Formula' element in Well-Tagged PDF represents mathematical expressions or equations within a document, ensuring that they are distinctly identified.

It should include notations or metadata to indicate that the enclosed content is a formula, thereby supporting accurate reflow and extraction of technical content.


PDFUA:

In PDF/UA, the 'Formula' element makes mathematical content accessible by providing semantic cues and, where necessary, alternative text descriptions for complex expressions.

Formulas must be tagged with additional metadata or alternate representations to ensure that assistive technologies can convey their meaning correctly.

Use cases

Simple formula represented by textual content

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Chemical formula represented by textual content and layout attributes

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Formula represented with MathML substructure

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Tag Relationships

Related Matterhorn Protocol checkpoints