Forms and Styles
For more information, see BC - Style and Form Maintenance.
Styles
A style defines the set of paragraph and character formats that are available for formatting a document.
A typical style contains, for example, a definition for a standard paragraph, list paragraph formats, and possibly special-purpose paragraph formats for headings, data in forms, and so on. A style also defines such character formats as boldface and italics.
If you select a style, this style provides the character and paragraph formats for your document. Any formats defined in the form selected for a document are ignored. Be careful, therefore, about selecting a style if none is currently selected.
An include text preserves the style assigned to an included text.
If your document is formatted with the S_OFFICE style and you include a document that uses the S_DOKUS1 style, SAPscript formats the included text according to S_DOKUS1; the other text is formatted with S_OFFICE.
Forms
A form specifies the page design. It defines one or more windows and arranges them on a page. Windows are output areas for texts and information, such as the bank routing information on a check or the items in an invoice.
In a form, you can specify different page designs for different pages, for example, for the first page and for subsequent pages.
A form is language-specific. The language of a form is determined by the print program or by the language you specify. The language is important because a form can contain pre-defined texts which must of course be printed in the correct language.
A print program collects information from the SAP system and from the form, uses the text you entered in the editors, and then generates the document. The print program uses a form and sometimes also a style to format and generate the document.
The program you use determines the windows into which you can enter text. If, for example, you choose
Tools 
SAPscript Standard Text, the system automatically opens window MAIN of form SYSTEM for text input 
.