Index - O
| Octagaon | Chart.Glyph, Chart |
| oldlace | Chart |
| olive | Chart |
| olivedrab | Chart |
| oneline | Chart.Line, Chart |
| opaque | Chart |
| orange | Chart |
| orangered | Chart |
| orchid | Chart |
| Orientation | Chart.Core, Chart |
| orientation | |
| 1 (Function) | Chart.Text |
| 2 (Function) | Chart.Bar |
| outerGap | Chart.Bar, Chart |
| OuterPos | Chart |
| over | Chart |