A text box is a field that allows the user to enter text into a single-line input box. A text box is useful when the amount of text to enter in the field is limited (such as a surname).
When you configure a text box, you specify a minimum and maximum length of characters that can be entered (between 0 and 1000). In addition, you can specify a dependency on one or more prior fields on the form. A dependency on a prior field controls whether or not the text box appears on the form and can be based on any value entered in the field or on a precise value.