The CSS Editor node is a handy node to misuse for thing completely unrelated to CSS. It acts as a good input for multiline strings (not user input but input relevant for the workflow).
On regular theme are APIs with heavy JSON payloads. The CSS editor then holds the JSON template and in a String manipulation or if more complex Java/Python can be used to use variables or table data to build the final payload.
The CSS Editor is now marked as legacy besides being used for another purpose. Here I want to propose a new node Similar to the CSS editor that allows easy input of multline strings be it css, json, html or markdown or SQL. Ideally it detects the format and has proper Text editor capabilities but that is not mandatory, just a nice to have. Whatever the CSS editor does would be good enough and if it were an official non-legacy node for multiline text input, it would be very helpful to have it.