| Valid value | Description |
|---|
| start | The change bar will be offset from the start edge of all column areas. |
| end | The change bar will be offset from the end edge of all column areas. |
| left | The change bar will be offset from the left edge of all column areas. |
| right | The change bar will be offset from the right edge of all column areas. |
| inside | If the page binding edge is on the start-edge, the change bar will be offset from the start edge of all column areas. If the binding is the end-edge, the change bar will be offset from the end edge of all column areas. If the page binding edge is on neither the start-edge nor end-edge, the change bar will be offset from the start edge of all column areas. |
| outside | If the page binding edge is on the start-edge, the change bar will be offset from the end edge of all column areas. If the binding is the end-edge, the change bar will be offset from the start edge of all column areas. If the page binding edge is on neither the start-edge nor end-edge, the change bar will be offset from the end edge of all column areas. |
| alternate | When there are exactly two columns, the change bar will be offset from the start edge of all column one areas and the end edge of all column two areas; when there are any other number of columns, this value is equivalent to 'outside'. |