'<h2 class=papertitle>Design-time assembly of runtime containment components</h2> <p class=paperauthor>David H. Lorenz and Predrag Petkovic, <span class=institution>Northeastern University, USA</span> <p class=paperabstract> In this paper we map the assembly and design time and space of component manipulation in a visual builder, and propose concrete ways of handling also context components seamlessly. We present a Context Development Kit environment that allows ConextBeans developers to test and evaluate JavaBeans components implementing the extensible runtime containment and service protocol. We enhanced the BeanBox from the Bean Development Kit (BDK 1.1) with new visual manipulation capabilities for nested beans, so that it is possible to drag and drop, serialize and de-serialize, group and ungroup nested beans. By means of these visual manipulations, child beans can be visually put inside context beans. We report lessons learned in reusing the BDK software.'