[tldoc] tweaks to manual

[Jjgod Jiang]

Hi Karl,

On Sat, Jun 11, 2011 at 1:23 AM, Karl Berry <karl at freefriends.org> wrote:
> Hi TL translators,
>
> We've made a few final (hopefully) tweaks to the English manual:
> - the context section is mostly rewritten;
> - small mentions of the \code{V} command in the text installer and
>  another tweak or two in the portable section.
>
> If you haven't started the translation updates yet, please do.
> I'd like to have them committed by June 20 (10 days from now)
> at the latest.

zh-cn translation of the manual has been updated.

- Jiang