I've not seen anything that does this. The closest I've seen is in SmartApps Designer > Registers > Windows. Create a new Window Definition and you can then choose from a list of all registers. Once you've selected a register, you then get a list of all the fields in that register when you go into Field in the matrix. I've not found a way to replicate this functionality in HAL though, other than making a new screen based which uses the Window Definitions register. Export/Import Format report is not in HAL source either so I think these functions use C code.