Unicode control pictures [1] are yet another alternative if you have a reasonable Unicode font and care more about reproducibility (e.g. formats can't be copied

Unicode control pictures [1] are yet another alternative if you have a reasonable Unicode font and care more about reproducibility (e.g. formats can't be copied and pasted easily). In fact, monospace fonts with control pictures represented by those inverted glyphs would be the best of both worlds! There is no reason that their reference glyphs should be exactly replicated, after all. [1] https://en.wikipedia.org/wiki/Control_Pictures https://en.wikipedia.org/wiki/Control_Pictures