This command will take the specified circuit and reduce it to a single level of hierarchy. A new circuit will be created for the flattened version of the original hierarchical circuit. The name of the new circuit will be the name of the original circuit with the string ``_f'' appended to it.
If there is already a circuit with the new name, the flattening process will not proceed. The newly created circuit will be lost if it is not saved using the write mag command. The original circuit will still be intact, however.