Rows or columns.
Whether the group's details are collapsed: the button expands it.
OptionaldisabledWhether a press would be refused (the sheet is protected); the button shows it.
The group's level, from 1.
Collapses or expands the group.
The edge of the square the button fills, in pixels.
A localized description of what a press does.
Props for the button that collapses or expands one row or column group.