http://openxmldeveloper.org/articles/2327.aspxArticle by Sheela E.N, Sonata Software Limited   This article explains the DrawingML implementation in Spreadsheet and how a drawing object is stored in SpreadsheetML using DrawingML. When an image/picture is inserted in a Spreadsheet document,en-USCommunityServer 2.0 (Build: 60526.2668)