RGB 0..=1 cell fill, or null for none.
Optionalrotation_Text rotation in signed degrees CCW (+45 slants up, -45 down; XLSX
alignment@textRotation). Omitted = horizontal. Present since 0.117.0.
OptionaldiagonalDiagonal border line(s): which diagonal(s) draw (up = bottom-left →
top-right, down = top-left → bottom-right) and the line width/colour.
Present since 0.117.0.
OptionaldirectionBase reading direction of the cell's text (XLSX alignment@readingOrder
2⇒rtl/1⇒ltr, ODS style:writing-mode). Omitted = unspecified
(reads left-to-right). Additive.
A typed spreadsheet cell (mirror of
model::SheetCell).