Use the index-select BASIC program to create an active list based on a single key or a range of keys.
index-select file.name index.specification key1{key2}
| file.name | Name of the file. |
| index.specification | Attribute definition or an a-correlative (a1, a2, and so on). |
| key1 | Beginning key. |
| key2 | Ending key (if omitted, then only item-ids matching key1 will be selected) |