[NTG-context] metafun's "smoothed"

Hello Hans, What exactly is the intended function of "smooothed"? I thought that the following should work and make round corners, but it only takes the bounding box. (I didn't play with it yet, but I assume that "punked" behaves in a similar way to what I would expect - it modifies the whole curve.) \starttext \startMPcode path p; % return p := ((0,0)--(1,0)--(1,2)--(-0.5,2)--(-0.5,1)--(0,1)--cycle) scaled 1cm; draw p; draw p smoothed 1mm shifted (3cm,0); \stopMPcode \stoptext Thanks, Mojca