Hi, I like to have the same environments in ConTeXt like in amsthm LaTeX. With defineenumeration I did emulate thm and others, but now I trying to have something like demostration. My code is: % AMSTHM \defineenumeration [exercici] [text={Problema},headstyle=bold,between=\blank,titledistance=0em,textdistance=1em, stopper={.\space},location=serried,left={\bgroup\bf},right={\egroup},width=fit, before={\bgroup\startframedtext[background=screen,frame=off,width=broad]}, after={\stopframedtext\egroup}] \defineenumeration [lemma] [text={Lema},headstyle=bold,between=\blank,titledistance=0em,textdistance=1em, stopper={.\space},location=serried,left={\bgroup\bf},right={\egroup},width=fit,style=italic] \definedescription[demo][location=serried,text={Demostración.},headstyle=bold, indentnext=yes,between=\blank,before={\bgroup},after={$\Box$\egroup}] The **problem** is how to put qed symbol (for example $\Box$ in my case) at the end of demo. I try with after but it's not works: \Box appears in the next line at the begginning. Can someone help me? Thanks, Xan.