script - execute commands from file or wire

    script <filename> [<from_label>:<to_label>]
    script -scriptwire [selection]

This command executes the yosys commands in the specified file (default
behaviour), or commands embedded in the constant text value connected to the
selected wires.

In the default (file) case, the 2nd argument can be used to only execute the
section of the file between the specified labels. An empty from label is
synonymous with the beginning of the file and an empty to label is synonymous
with the end of the file.

If only one label is specified (without ':') then only the block
marked with that label (until the next label) is executed.

In "-scriptwire" mode, the commands on the selected wire(s) will be executed
in the scope of (and thus, relative to) the wires' owning module(s). This
'-module' mode can be exited by using the 'cd' command.