You don't need to know ed command language and regular expressions to use sam or acme. All you need is a mouse. Knowing them would make a huge productivity boos

You don't need to know ed command language and regular expressions to use sam or acme. All you need is a mouse. Knowing them would make a huge productivity boost but you can start using them gradually. Yes, you need documentation. How much though? I'd say very very little compared to traditional editors.