> Am 08.11.2020 um 03:19 schrieb Sylvain Hubert <champignoom@gmail.com>:
>
> Dear List,
>
> I'm trying to move up a section title (section b) 2cm upward:
>
>     \starttext
>     \section{a}
>     \blank[-2cm,force]\
>     \section{b}
>     \section{c}
>     \stoptext
>
> The empty space (\ ) after the \blank is necessary here, without which the \blank does nothing.
> I would like to ask whether there is a less hacky way to let \blank work than the hidden space.

You could use the low level method of \vskip-2cm