- The top row(s) in the table contain the headers of the columns in subsequent rows, and
- The leftmost column(s) contain the headers of the rows in subsequent columns.
When this table is converted to PDF, CommonLook Office will tag the column and row headers correctly, allowing screen readers and other assistive technology devices to read the structure of the table.
The following additional information can be specified for the table:
Generate Speak Text When checked, this option generates an alternative textual description for each of the table’ s cells, providing support for the most basic types of linear screen readers which may not support table header structures.
The textual description contains the text of the row header followed by the column header and the data value of the cell. For example, the second cell in the fourth row in the sample table above will have a textual description of ” 2004 Apple $12″, the third cell ” Year 2004 Orange $13″). This ensures that the text will be read by software that provides basic support for alternate textual descriptions, even if table structures are not supported.
ADVISORY: Speak Text may have the effect of making the table less useful to users with PDF-friendly assistive technology that can leverage table structures in PDF files. For this reason, it is recommended that Speak Text is generated only if required to support devices or software that do not fully process table structures in PDF.
Number of Column Header Rows The number of rows that contain column headers (1 by default). When more than a single header row is specified, the data in a given table cell will be read following the text of all headers.
Number of Row Header Columns The number of columns that contain row headers (1 by default).
Guidelines and Standards
This checkpoint is relevant to the following regulations, guidelines and standards.
|US Section 508||2001||“Web-Based Information & Applications”||(g) & (h)|
|W3C WCAG 2.0||2008||Web Content||SC 1.3.1|
|ISO 14289 (PDF/UA)||2012||PDF Technology||Section 7.5|