CR and LF were invented as codes, along with the teletypewriter, by Douglas Murray around 1900. Original Baudot (ITA#1) and other earlier telegraph codes were o

CR and LF were invented as codes, along with the teletypewriter, by Douglas Murray around 1900. Original Baudot (ITA#1) and other earlier telegraph codes were one-dimensional with no concept of lines. Perhaps someone with institutional access to his paper, Setting type by telegraph, can see whether it discusses the intent of the pair. Setting type by telegraph, Journal of the Institution of Electrical Engineers, Volume 34, Issue 172, May 1905, p. 555–597 https://doi.org/10.1049/jiee-1.1905.0034 https://doi.org/10.1049/jiee-1.1905.0034