On 19/08/2010, at 3:50 PM, Arno Trautmann wrote: > This time a simple question: I want to define a document environment > that offers a star alternative. Trying to say > > \DeclareDocumentEnvironment{myenv}{s}{ > } > {} > > gives me an undefined environment in my document. Am I doing something > wrong here? If so, is there another way to achieve \begin{myenv*} in the > document? I guess for this sort of thing we haven't thought of a better interface beyond \DeclareDocumentEnvironment{myenv*}{}{ ... }{ ... } Nothing really springs to mind as being more convenient... any suggestions? In your case above, you'd be defining an environment that looked like \begin{myenv}*...\end{myenv} which is obviously not what you want (and a little bit weird). -- Will