First thanks for your help, I did what you suggested and it worked.
But now I am trying your example file align.tex and running texexec,
using the latest Context (2006.03.23), I get the following error. I 
believe the problems
lies in verb-tex.tex but I am not sure.

section         : 1 Basic Alignment
<align-align.tmp> (/usr/local/tex/texmf-local/tex/context/base/verb-tex.tex
loading         : Context Support Macros / Pretty TEX Verbatim
)
! Missing number, treated as zero.
<to be read again>
                   f
\currenttyping ->f
                  ile
\checkverbatimfileline ...enumber <\currenttyping
                                                  \c!start \else \ifnum 
\ver...

\presetnormalverbatimline ...\doflushverbatimline
                                                  \global \chardef 
\verbatim...

\readline ...line \else \presetnormalverbatimline
                                                  \fi \fi \fi \fi 
\handlever...

\processfileverbatim ...expandafter \readline \fi
                                                  \closein 
\verbatiminput \e...
...
*l.25 \ShowExample*

Greetings
Wim Neimeijer

adityam@umich.edu wrote:
> Here are a few details of _how I understand_ the align mechanism of 
> context. Hope that others will find it useful. Any suggestions for 
> improvement are welcome.
>
> Aditya
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