fixed columns height

fixed columns height

[Jano Kula]

Hello,

looking for the multicolums of fixed height I've found the solution from 
Wolfgang [1], which doesn't work with latest beta (mkiv):

\usemodule[streams]

\definestreamlayer[test][method=overlay]

\setupbackgrounds[page][background=test]

\starttext

\startstreamlayer[test]
\startcolumns
\input knuth
\stopcolumns
\stopstreamlayer

\setlayer[test][x=5cm,y=10cm]{\placestreamlayer[test]}

\stoptext

Here is the scenario: tree columns of fixed height should be placed at 
the precise place (end of the page, so they can also float there).

It is necessary to measure their natural height, also, to check if all 
the material fits in the the specified height or find some other way to 
check if the material is lost or not.

Do you have any hints?

Thanks,

Jano

[1] http://thread.gmane.org/gmane.comp.tex.context/55324/focus=55433


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