The Screen Structure tab of the screen message editor allows you
to view information about the fields of the application screen from which
the screen message was created.
Displaying field information
Use the Screen Structure tab of the screen message editor to display information about a field, such as the name, offset, and length of the field.
Changing the name of a field
Use the Screen Structure tab of the screen message editor to change
the name of a field in a screen message.
Default field name
The service flow project tools assign a default field name to each
field in a screen message when the screen message is created.