[NTG-context] Placing an image on a portion of a frame

Hi, I wish beyond the image on the frame at the edge of the text. Thank you. Fabrice ​ \definefloat [recipe] [figure] \setupfloat [recipe] [default={right,none}] \definecolor[FondTableaux][c=0.00, m=0.00, y=0.20, k=0.00] \starttext \placerecipe{}{\rotate[rotation=-15]{\externalfigure[vipere.jpg][width=6cm]}} \startframedtext[width=fit,background=color,backgroundcolor=FondTableaux] \input knuth \stopframedtext \stoptext