Backstage is a new feature to Office 2010, providing document overview and options:
Office 2010 is more "role-based" than previous versions. There are features tailored to employees in "roles such as research and development professionals, sales people, and human resources." In its Internet implementation, Office 2010 incorporates features of SharePoint Server and borrows from "Web 2.0" ideas. Microsoft Office 2010 includes updated support for ISO/IEC 29500:2008, the International Standard version of Office Open XML (OOXML) file format] Office 2010 provides read support for ECMA-376, read/write support for ISO/IEC 29500 Transitional, and read support for ISO/IEC 29500 Strict. In its pre-release (beta) form, however, Office 2010 only supported the Transitional variant, and not the Strict. The intent of the ISO/IEC is to allow the removal of the Transitional variant from the ISO/IEC compliant version of the OOXML standard. Microsoft Office 2010 supports OpenDocument Format (ODF) 1.1, which is an OASIS standard.

Backstage is a new feature to Office 2010, providing document overview and options:
Office 2010 is more "role-based" than previous versions. There are features tailored to employees in "roles such as research and development professionals, sales people, and human resources." In its Internet implementation, Office 2010 incorporates features of SharePoint Server and borrows from "Web 2.0" ideas. Microsoft Office 2010 includes updated support for ISO/IEC 29500:2008, the International Standard version of Office Open XML (OOXML) file format] Office 2010 provides read support for ECMA-376, read/write support for ISO/IEC 29500 Transitional, and read support for ISO/IEC 29500 Strict. In its pre-release (beta) form, however, Office 2010 only supported the Transitional variant, and not the Strict. The intent of the ISO/IEC is to allow the removal of the Transitional variant from the ISO/IEC compliant version of the OOXML standard. Microsoft Office 2010 supports OpenDocument Format (ODF) 1.1, which is an OASIS standard.