OptionalalignOptionalbgOptionalboldOptionalcolPositive safe integer, default 1. The top-left cell supplies a merged cell's content.
OptionalfontCSS font-family list. Defaults to system-ui, sans-serif.
OptionalfontOverrides the table's fontSize for this cell, for a heading row.
OptionalitalicOptionalrowPositive safe integer, default 1. Spans stay inside the existing rectangular grid.
Explicit newlines form a block with 1.2em line spacing.
OptionaltextText colour. Derived from bgColor for contrast when omitted.
OptionaltooltipPlain-text hover detail. Newlines are preserved; a merged cell uses its anchor's tooltip.
OptionalverticalAligns the text block within the cell, with 4px edge padding. Defaults to middle.
Cell fill. Transparent when omitted, so the pane shows through.