Using marking by colors you can define a color for objects included in a saved query. When you need to run several queries, each query can be marked with a different color.
Selection category, click
(Search filter).
(Create new query).
After you set the query parameters and validate all the changes, the searched objects are marked with the assigned color.
If you want to save some queries, click the Save button in the Search and mark objects dialog after setting each query parameters. You need to provide a name for the query. The saved queries will appear in the Queries section of the Project Explorer.