Many articles and studies have emphasized the importance of communication. Nevertheless, during the last years, the work and efforts of the software process community have focused on coordination (i.e. on task ordering) and collaboration (i.e. data sharing). Unfortunately, communication between humans has received much less attention; most existing systems do not provide explicit support for this ... [Show full abstract] aspect which is thus not controlled by the environment that supports the process. This paper shows how we support communication in our APEL system.