To format texts in forms, you need paragraph and character formats. You define them in the form itself. If you are working with the line editor, the paragraphs you define here appear in the possible values list (F4) for the format column beside the system-defined standard paragraphs. If you are using the WYSIWYG PC editor (32bit platforms Windows 95 or Windows NT 4.0 required), the formats defined appear as pushbuttons. The figure below shows an example of how to maintain a paragraph within transaction SE71 (Form: Request). Use the pushbuttons Font, Tabs, and Outline to refine paragraph definitions according to your requirements.
For more information on how to create paragraph formats, see the SAP system online help documentation BC - SAPscript - Style and Form Maintenance.