./flow.tcl -design <design_name> -init_design_config
https://github.com/efabless/OpenLane/blob/master/designs/README.md
https://github.com/efabless/OpenLane/blob/master/docs/source/advanced_readme.md
./flow.tcl -interactive -file script.tcl
4. List of commands available in openlane, their functionality, and their expected inputs and outputs.
https://github.com/efabless/OpenLane/blob/master/docs/source/openlane_commands.md
https://github.com/efabless/OpenLane/blob/master/configuration/README.md