I have the following setup for side-by-side paras.

\defineparagraphs[Two][n=2]

\setupparagraphs[Two][1][width=.1\textwidth,style=\bfx,align=tolerant]

\setupparagraphs[Two][2][width=.9\textwidth,style=normal,align=tolerant]

My difficulty is that while there is only ever just a couple of numbers 
in the left-hand 'column', the right-hand 'column' may have several 
lengthy paragraphs. If I have one relatively short \startTwo followed by 
one that is much longer, it will be forced to start on the next page, 
leaving too much empty space on the previous page.

It is probable that getting this environment to split across pages is 
not possible. I can try very different approaches (columns, tables) to 
solve my problem, but I thought I would at least ask first.

Julian