Recently, however, I found myself deep in the trenches of the FEBRABAN standard—the backbone of financial data exchange in Brazil. Back then, looking at those massive technical manuals, I didn’t fully grasp the elegance that could be hidden within those rigid lines. I had parsed files before, and while I managed to make them work, I often felt I was fighting against the legacy formats rather than working with them.

https://dev.to/matheuscamarques/the-definitive-guide-to-parsing-financial-protocols-and-the-febraban-standard-5fkj