[OS X TeX] \overleftrightarrow

[Michael Sharpe]

On Nov 1, 2013, at 3:20 PM, juan tolosa <juantolo at me.com> wrote:

> LaTeX has a neat control sequence, \overleftrightarrow, which puts a double arrow on top of characters. 
> This is missing in plain TeX. 
> Does anyone know of a similar object in plain TeX?
> 
> Thanks,
>                Juan

That's in fact an AMS command, not a basic LaTeX command. In LaTeX, that's usually loaded with \usepackage{amsmath}, but the command may also found in amstex.sty which can be loaded by Plain TeX.


Michael
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://tug.org/pipermail/macostex-archives/attachments/20131105/05efe2cf/attachment.html>