Smartforms
...define how your output can look on paper (or in PDF format). It can be started with transaction SMARTFORMS which shows...
Form
...for the name of the actual Smartform, which contains...
Form Attributes
...defining the page format (A4) as well as the..
Style
...defining default font (size), paragraphs (with fonts and tabs), character formats. Then there's also...
Form Interface
...which defines what data is to be presented as a set of parameters...