Element

Displays the start tag of the selected element. When you have
added an attribute to an element, the start tag of the element cannot
be modified by selecting Edit from the pop-up menu. However, you
can change the start tag in this dialog box.

Name

Type the name of the attribute.

Value

The value of the attribute can be a control reference selected
from the drop-down list box or an expression that resolves to a
string.