Since my initial post I have become aware of what might be another interpretation of 'Path'. I had assumed that it was the same as 'Track', meaning in a stadium on a wooden or metaled track. However, I have subsequently seen a catalogue that lists availability of a track frame as separate from a path frame (just looked and can't find it again). So does 'path' maybe refer to a dirt surface in an enclosed space, such as a stadium? Or perhaps on grass? Or are path and track interchangeable?