Sample XSL-FO file This text appears in the before region of the document. With the default writing mode that is the region at the top. XSL This text appears in the after region of the document. With the default writing mode that is the region at the bottom. This text appears in the start region of the document. With the default writing mode that is the region at the left. This text appears in the end region of the document. With the default writing mode that is the region at the right. Extensible Markup Language (XML) has become the standard format for data interchange to support e-business initiatives such as Web services, business process integration, customer relationship management, supply chain management, business-to-business commerce (B2B) and more. Formatting Objects Test Suite