Despite exponential increases of computing power over the past half-century, at least one problem involving ones and zeroes has defied easy solution: how to shape the graphical forms of numeral ‘0’ (zero) and capital letter ‘O’ (Oh) so a human reader can easily distinguish between them.

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Moran, J., D. Byrne, J. Carlier, B. Dunford, A. Finn, Ó hUallacháin, and C. Sullivan. 2021. Management of high nature value farmland in the Republic Ireland: 25 years evolving toward locally adapted results-orientated solutions payments. Ecology Society 26(1):20. https://doi.org/10.5751/ES-12180-260120