Does anyone know how to use the thumb mouse buttons (usually 'Mouse4' or 'Mouse5' in other contexts) as accelerators in CATIA? When setting up an accelerator for a command ('Hide/Show' in this case) CATIA wants me to input the name of the button to use as the accelerator. But I don't know what the proper names are for these buttons in the CATIA setting. 

Follow-up question: Is there a list somewhere of the accelerator commands that CATIA will accept? 

Thanks