Changes

<context source=yes>

\setupcolors[state=start]

\definedescription[Desc][alternative=top, hang=20,

command=\hskip-1cm, margin=1cm]

\Desc{Short} This item's short label is set above the paragraph. The

paragraph starts 1cm in.

\Desc{Rather longer label} This item's rather longer label is also set

above the paragraph. The paragraph starts 1cm in.

</context>