When editing the lists what is the type of control being used, please ?
Have tried to replicate them in the main dialog and the best I can come up with is a plain multi-line edit control.
But the config lists have one item per line, if the line is longer than the box the line is truncated.
I cannot replicate this behaviour in a dialog edit control, the lines will automatically wrap.
That's just a multiline edit control, the only difference between it and what you can use in scripts is that it has a flag set on it to disable word wrapping. We can expose that for scripts easily enough.