colour vs. color vs. behaviour vs. behavior vs. horisontal vs. horizontal...

[Juanma Barranquero]

Is there any intent to maintain consistency in docstrings and texinfo
docs wrt alternate spellings? (In fact, I think "horisontal" is
incorrect, but I'll defer to native speakers...)

In code:
- horizontal is used in almost 99%
- color is ~ 99%
- behavior > 70%

In the texinfo docs, "horisontal" and "colour" are not used;
"behaviour" is about 7%.

At least, I've not found any instance of "jail" or "gaol" ;-)

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                    /L/e/k/t/u