Hi @Bob_Gross - welcome to the community and thanks for posting.
Do you have an example screenshot of the code you’re referring to? We recently released the Expressions feature for rules which gives you a code-like interface for writing math and logical expressions. There’s not a feature for writing full rule logic in code though.
On the dashboard side of things, the Custom Tiles feature can be used for writing your own custom tiles in a code editor, but that does not apply to the dashboards.
PS. If you have some example rules you need help converting, feel free to post them! The community is really great at helping out and many other people are in the process of doing the same conversion you are!