# [NTG-context] Math literal colon

Hans Hagen pragma at wxs.nl
Fri Jul 24 16:26:14 CEST 2015

```On 7/24/2015 4:08 PM, Hans Aberg wrote:

> I was thinking of just having the two, \colon and \ratio. Looking into some books before electronic typesetting, the spacing of the latter can vary widely: some do not use spaces at all. So a set might look
>    {x:x < a}
>    {x : x < a}
> But that would be a typographical issue, rather than semantic.

but we do need to deal with the typographic issue and unicode is not
covering every symantic (otherwise we would have more)

Hans

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