Menu: View→Object Properties→Text→Figure caption
The currently selected figure caption. Changes made in this box are reflected immediately in the path diagram. You can use text macros within a caption to display fit measures and other information such as the current date and time.
Programming
In Amos Graphics programs, you can fill this text box with "Sample text" by using the following statement (Visual Basic):
pd.GetTextBox("ObjectPropertiesForm", "VariableText_0").Text = "Sample text"