Once downloaded, you can open these in Excel and you can connect to them from Power BI service. Microsoft has created sample content for you to use with Power BI. Each of these samples is available as a content pack and as a separate Excel workbook. See example > Here’s a step-by-step on building concept maps for a variety of topics: plants, football, and the Cinderella fairytale. You may need to enable the Power View add-in. The files that make up PPIS are ASCII files (ASCII is a code that has been used since the 1960s for information transfer). Interested parties may access them using a variety of database and spreadsheet software.