| Attribute | Attributes control some advanced features available in ISYS. Set any of the attributes before executing the search to have them take effect. |
| Engine | All search objects must be attached to an ISYSEngine. This is taken care of for you if you created the search object view NewSearch methods. |
| Filter | Contains the filter that is to be applied to the result list. |
| MaxRows | Indicates the maximum number of results to return. |
| Properties | Properties is a location where you can store user defined name-value pairs. They do not affect the outcome of a search. |
| QuerySource | QuerySource specifies the data collection that is to be searched. This can either be a path to an index, a result list, concept node. |
| QueryText | QueryText supports multiple formats of query and is dependant on QueryType. This will generally be query text, but can also be a ISYSDocument to support FindSimilar. |
| QueryType | Indicates the type of query to execute. |
| Sort | Indicates the sorting to apply the result list. Sorting has been extended in ISYS:web.dk (admin) to handle metadata and nesting sorting. |
| Synonyms | Allows for user defined synonyms to be applied to the search. |