A slightly different spin has been working on some 20+ year old C/C++ code that is relatively nicely written, such that you can still expand on it today. I had

A slightly different spin has been working on some 20+ year old C/C++ code that is relatively nicely written, such that you can still expand on it today. I had a lot of joy recently reading the Voyager 1 image decompression routines and some X11 window manager sources.