flatten

flatten 
-set d_setObj 
[ -preserve_nets [ true | false ] ] 
[ -verbose ]

Flattens instances in the given set.

`-preserve_nets [ true \| false ]`
	If `true` and the master being flattened was originally a cut-out from the top-level, nets are preserved. If nets cannot be preserved when flattening, use `extract_net_connectivity` to establish connectivity. Default: `false`
`-set` d_setObj	Specifies the set containing the instances to flatten.
`-verbose`
	Outputs information about each cell extracted. Default: `false`