> The following text has protrusion and is justified.
>
> \setuplayout [width=6cm]
> \definefontfeature [default] [default] [protrusion=pure]
> \setupalign [hanging]
> \showframe
> \starttext
>    \spaceskip=1ex plus 1ex minus .2ex
>    \input knuth
> \stoptext
>
> >/  forcing a constant distance.
> /
> If you provide stretch and shrink the distance is not constant.
Thank you! I dont understand this command, what does "1ex plus 1ex minus 
.2ex " excactly mean? Does it mean the consecutive distance is element 
of the interval [0,8ex;2ex] or what?

> >/  The question is, only to add an minimal distance, wich has not to be
> />/  undercut while protrusing and justifying.
> /
> Example please
>
> Marco

I am asking for the example :) Or what do you mean. Your example above is exactly, what I was
searching for. Only the syntax have to be understood.

Huseyin