Text fields encompass a multiple variety of single line text fields, typically of the style <input type="text" /> . They are not intended to include carriage returns or any complicated paragraph style input.
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Plain Text
Plain Text field is used for Simple Unformatted Plain Text Values, like a first name, last name, alphanumeric ID or value.
Website
The Website field is used to store a URL or Website Address or Link to a Website.