On Sat, Mar 14, 2009 at 5:32 AM, Wei-Wei Guo <wwguocn@gmail.com> wrote:

> Dear all,
>
> I'm reading the source file of t-bib. I find there are lots of '\c!',
> '\s!', and
> '\v!'. What do they mean? I searched in wiki, TeXBook, ConTeXt manual, TeX
> impatient,
> and mail list. Those commands appear some times, but no explanation.


http://archive.contextgarden.net/message/20080629.104105.40e28a70.el.html



> Another question is related the following codes from Taco (thank you,
> Taco). There
> are tokens like '\??pb @lang@`. What does it mean? Could you tell me, to
> get deep
> understanding, what to read or which part to read in TeXBook or some other
> manuals.
> I don't know what to search to find related topics.
>
>  \unprotect
>>  \def\lang#1%
>>   {\def\biblanguage{#1}%
>>    \ifcsname \??pb @lang@#1\endcsname
>>        \expanded{\mainlanguage[\getvalue{\??pb @lang@#1}]}%
>>        \expanded{\language[\getvalue{\??pb @lang@#1}]}%
>>     \fi \ignorespaces}
>>   \protect
>>
>>
> Best wishes,
> Wei-Wei