Hi,

I think the following can solve your problem, but I don’t know whether it is the optimal way to achieve what you are looking for: in any case you can play with the dimensions used here as an example, in order to find the correct location.

Best regards: OK
%% begin rotated-text.tex
\define\myrotatedtext{%
	\rotate[rotation=90]{%
	\scale[width=50mm]{\startcolor[darkred] my rotated text\stopcolor}
	}
	}
	
\definelayer[myrotatedlayer]
	[width=30mm,
	height=100mm,
	repeat=yes]

\setlayer[myrotatedlayer]
	[x=180mm,y=100mm]
	{\myrotatedtext}
		 

\setupbackgrounds[page][background=myrotatedlayer]

\starttext

\input knuth

\stoptext
%% end rotated-text.tex



> On 2 Feb 2018, at 12:41, dr. Hans van der Meer <havdmeer@ziggo.nl> wrote:
> 
> I would like to put a (rotated) text on every page in the margin.
> Please, how do I accomplish this?
> 
> Hans van der Meer
> 
> 
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