RCL-57 now available at the App Store

[EdS2]

Oh, interesting note about the two very different manuals. My TI-57, bought in the UK, came with the shorter version. Both manuals, I note, have a space in the front pages for the owner to record the serial number - so I think one or other would have been shipped with each calculator. Both are copyright 1977, but I'd hazard that the shorter one would have been a cost-reduced development, perhaps for non-US markets.

The longer one can be read online here
https://archive.org/details/Makingtracks...d/mode/1up