Interactive Reporting helper functions implemented in Visual Basic are saved to the exported file. In this instance, the Excel file becomes self-contained. It can be passed to any user as is and does not require installing additional components such as Excel add-ins. All the functions are implemented within this file.
Since VBA functions are treated in Excel as macros, Interactive Reporting signs them digitally in order to prevent a security warning dialog box in Excel if the macro security level is medium or high. When the macros are signed, you can observe certification information and choose to trust the sources. Once the certificate is marked as trusted, all subsequent openings of exported Excel files proceed silently.