| View: | Hide Browser | Browser on the left | Browser on the right | Dictionary |
| Report: | General Info | Constrained Elements |
| General Info | |
| Name | Valid_structure |
| Expression | inv: items.forall(i:ITEM | i.type = 'ELEMENT') |
| Base Classes | Class |
| Constrained Elements | |
| Name | Type |
| ITEM_LIST | Class |