speak-header-cell

Value: [once | always]
Initial: once
Applies to: header cells
Inherited: yes
Percentage values: N/A

The speak-header-cell CSS property defines how the TTS engine handles the header cells in a table when a table is rendered as tablular data (see Tables). If this property is set to 'always', the engine speaks the headers before every cell. If it is set to 'once', the engine speaks the headers before a cell only when that cell is associated with a header different from that of the previous cell.