[NTG-context] A dumb question about MetaFun

Hi list! A simple question: is there an equivalent of thetextext for a normal picture (an "image(draw ... ;)")? I want to move the center of a picture to an specific point, like this: \startMPpage draw thetextext("\tttf hello", origin) ; draw unitsquare scaled 1cm; \stopMPpage The "hello" is centered at the origin. I want to achieve the same result for pictures. I've seen such a command some time ago, but I've forgotten and I cannot find it again in documentation. Thanks and sorry for any inconvenience. Regards, Jairo :)