Screen-Cast: Exploring the Structure of Embedded Spreadsheets in PowerPoint Presentations
Most users of Microsoft Office are aware that you can directly embed an Excel spreadsheet (XLSX) in a PowerPoint presentation (PPTX). In Open XML terms, the XLSX is stored in a binary part. In addition, there is an image of the view of that spreadsheet, also in its own separate part. This screen-cast shows how to unzip the PPTX, see where the embedded XLSX is, unzip the XLSX, change some markup in one of the worksheets, re-zip the XLSX, and re-zip the PPTX. Further, it is interesting to see where the image of the embedded workbook is stored in the PPTX, and to replace that image with a different one. This screen-cast shows how to accomplish all this and end up with a valid PPTX that is put together correctly.