The letter “r” serves as a remarkably versatile element in literature and scholarly texts, functioning variously as part of proper names, grammatical markers, abbreviations, and even as specialized notation. In epic poetry and mythological narratives, for example, “r” appears in heroic names like Ráma, whose adventures are recounted with reverence in multiple verses ([1], [2], [3]). In academic and grammatical works, “r” is employed in the analysis of Latin terms—forming part of inflected words such as reor and indicating grammatical case distinctions ([4], [5]). Additionally, the letter “r” is adopted in technical contexts such as chess notation ([6], [7]) and bibliographic references ([8]), illustrating its broad adaptability across genres and disciplines.