What this means
Table headings explain the values beneath or beside them. They must be identified as headers, not just displayed in bold, so reading software can connect each value with its meaning.
Passing examples
- An hours table identifies 'Day', 'Opens', and 'Closes' as column headers.
- A comparison table identifies product names as row headers and features as column headers.
- A prices column is headed 'Price in EUR', making both its meaning and unit clear.
Failing examples
- The first row is bold but has no table-header meaning.
- A column of numbers has no heading explaining what the values measure.
- Merged headers are connected to the wrong cells, so reading software gives misleading labels.