The preset dashes (DrawingML ST_PresetLineDashVal), as Excel's Dash type list offers them.
Remarks
The sys presets are measured in line widths of a hairline; the others in the line's own
width. IBorders.StrokeStyle is a cell border's, a different list.
The preset dashes (DrawingML
ST_PresetLineDashVal), as Excel's Dash type list offers them.