Abstract: A technique for generating a form is described. In the technique, a user provides information associated with a user-defined field, including a data type and/or semantic information for an entry associated with the user-defined field. Then, a computer system generates the form, which includes the user-defined field and additional fields based on the information associated with the user-defined field and the additional fields. This form includes a spatial reference pattern that, when printed on paper, facilitates data input using a writing instrument (such as a digital pen). Furthermore, generating the form may involve translating from a computer-input format of the form to a writing-instrument format based on specified layouts or sequential positions of the user-defined field and the additional fields. Next, the computer system provides the form to a user.