L and R are digitised versions of the analogue triggers, useful if you are using digital inputs rather than analogue triggers. The two Zs are the bumpers on the XBox controller. I'll post an image with the exact match once I have made it.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
