Save to specific directory location

I feel like this is a trivial question, but I can’t figure it out. How do I save my standalone html document to a directory other than the derived script directory.
I do not see anywhere to specify a specific directory location in io.save or io.output_file.

Define the full path for the location, not a relative one.

So for example;

output_file(“/home/user/test/plots.html”)

``

or

output_file(“C:\Temp\plots.html”)

``