Enter one option per line (value|label pairs work too), and the tool builds a select dropdown with a name and optional multiple attribute.
Write each line as value|label, for example us|United States. The text before the pipe becomes the option value and the text after becomes the visible label. A line with no pipe uses the same text for both.
Adding multiple lets users select more than one option, and the control renders as a scrolling list box instead of a single-choice dropdown.
An optional disabled, selected first option (like Choose one…) prompts the user without being a valid submittable value, improving form usability.