OptionalanchorWhere the box is: the cells and pixel offsets of its top-left and bottom-right corners,
the cells counted from the note's own (r: -1 is the row above it).
OptionalboundsWhere the box is in pixels from the sheet's top-left, for a box placed by position rather
than by cells. Used only when there is no anchor; once loaded, the box is anchored
to the cells under it and saves an anchor.
OptionalfillThe box's fill, where it states one. Absent draws Excel's default.
OptionalstrokeThe box's line, where it states one. Absent draws Excel's default.
OptionalxmlThe rest of how the box is drawn when that is not Excel's default, held as it was read: the
VML <v:shape> without its id, its position, its cell, its fill or its line.
A note's box, where it differs from the default.