| 9.2.2.5.5. - | ||
|---|---|---|
 | 9.2.2.5. Boolean operators |  |
| 9.2.2.5.5. - | ||
|---|---|---|
| | 9.2.2.5. Boolean operators | |
The “-” or prohibit operator excludes documents that contain the term after the “-” symbol.
To search for documents that contain “learning federation” but not “learning object” use the query:
"learning federation" -"learning object" |
| |  | |
| 9.2.2.5.4. NOT |  | 9.2.2.5.6. Grouping |