| Name | Value | Description |
| kDataDropIOMechanism | 13058 | A data drop IO operation. |
| kFileBrowseIOMechanism | 13059 | A file browse IO operation. |
| kPasteSpecialIOMechanism | 13060 | A paste special IO operation. |
| kUnspecifiedIOMechanism | 13057 | An unspecified IO operation. |