Barcodes are not displayed in the preview of the Style Builder.
The Line spacing is not adjusted automatically if you use a larger font size. Therefore, you must change the line spacing to avoid overlapping.
Styles can be activated by choosing Style → Activate or clicking the corresponding pushbutton.
Smart Styles can be created by either selecting the Style radio button on the initial screen of the SAP Smart Forms transaction or by starting the transaction SMARTSTYLES directly.