Honda functions include: 
DTC reading and clearing (allows the user to read both permanent and temporary DTCs. Once the fault causing the DTC has been found and repaired the DTC tool can then be used to clear DTCs.) 
Snapshot function (capture data relative to a trigger event) 
Vehicle data display (value, line graph, or bar graph formats) 
DLC locator diagrams 
Data list display (real-time display of ECU parameters) 
System Functional Tests (allows for more detailed testing of specific parts of the vehicle systems, where the support these tests (e.g. Window movement, Lighting, Vehicle Gauges and engine components)). 
Onboard tutorial