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.

\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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