| IndexBody | Contains an index. |
| IsProtected | Specifies whether a section is protected. The defined values are: false: section is not protected from editing. true: section is protected from editing. |
| Name | Contains the name for an illustration index. |
| ProtectionKey | Specifies that an authorization is required for removing the protection of a section. |
| Source | Specifies how an index of illustrations is generated. |
| Style | Contains style. |