| Transaction File Format | Applications can update the ISYS index in a transaction file, whereby the application constructs a transaction file containing various statements of fact, for example, "this document has changed" or "this document no longer exists". The ISYS engine then reads this transaction file and updates the index accordingly. |
| IDBFunction Commands | IDBFunction maintenance commands that can be performed against an index. |
| Applying ISYSIndexer Updates | In applications where data is constantly added, removed or changed, it is important to keep your ISYS index up to date with the "Real World" data. |
| ISYS Intelligent Agents | Agents provide users with the ability to receive notifications when new material appears that match given criteria. That is, material which has entered the ISYS arena that the user has not seen before. |
| Supported File Formats | Lists the supported file formats along with their format code. |
| Error Codes | Lists the possible error codes |