Context alternative for Latex's \overset & \underset

[WN <wneimeijer01@cs.com>]

Hi,

In doing my Latex to Context conversion, I stumbled on two Latex math 
commands : \overset and \underset
as in

\mathcal{T} = \overset{\infty}{ \underset{r,s = 0}{\cup} } \: 
\mathcal{T}^{r}_s

The page http://wiki.contextgarden.net/Math_with_amsl mentions the 
commands stackrel and underset
when using the AMSL module from Giuseppe Bilotta.
I tried to load the AMSL module with \usemodule[amsl] like to test
its workings.

\usemodule[amsl]
\starttext
\startformula
T = { \underset{r,s = 0}{\cup} } \:  T^{r}_{s}
\stopformula
\stoptext

but the log file indicates it cannot find the module amsl ???
Is the AMSL module not part of the standard Context distribution ? I 
thought it was.

I am using ConTeXt  ver: 2006.07.24 10:49  fmt: 2006.7.27  int: english  
mes: english.

Kind regards
Wim Neimeijer