Extraction of queries' plans is implemented both in the Viewer and in the log. Improved logging is a great advantage for administrators who wants some sort of an audit, or for developers who study queries behavior in sophisticated systems.
Using tags developers and administrators can easily track long-running or special queries, watch real-time flow of SQL queries from different applications.
With automatic priority setting for Firebird Classic administrators of heavily loaded Firebird-based systems can perform tuning and use their hardware resources better.