The unused tab identifies items that are declared (in set parameter etc statements) but are never used on the right hand side of an assignment (=) statement or in a model equation. The output for the model asmall10.gms is as follows
which shows
| ID | names of items that are declared but unused |
| Type | item type (Parameter, set, variable, etc) |
| File | Name of file in which the item is declared. |
Double clicking in the file column causes the IDE to open (if the IDE is the registered item to open GAMS files) to the spot in the file where the an item with the spelling of the name in the ID column appears in the context (declared, defined, referenced etc.) which generally will be the place where the declaration appears. For example if we double click in the file column associated with the AGPRODUCT row the IDE opens as follows
With AGPRODUCT highlighted.