The Help Information (Desktop App) and About Button (Web App) will show information on the install of the practice and necessary information on the install. Desktop en Web App has different information and functions on the Help Information or About Button. Please refer to each glossary item for more information: 

Web App:

• User manual
• Changelog
• Services
• Usage Evaluation

Desktop App:

• System Information
• Debug Utilities
• Session information
• Schema version information

Also refer to:
About Button
Help Information