21.16.7.3 Description

This command returns a collection of nets matching the pattern you specify. You can only use this command as source objects in create clock (create_clock) or create generated clock (create_generated_clock) constraints and as - through arguments in set false path (set_false_path), set minimum delay (set_min_delay), set maximum delay (set_max_delay), and set multicycle path (set_multicycle_path) constraints.