“…These benefits reflect a trade-off between constrained design options, and good reuse and particularization of CLFPs and an easy edition of collaborative LDs. These characteristics are not considered in more generic approaches, such as RELOAD LD editor (University of Bolton, 2004;Milligan, Beauvoir, & Sharples, 2005) and CopperAuthor (van der Vegt, 2005), which are close to the technical source of the specification and use text-based notation, or MOT+ (de la Teja, Lundgren-Cayro, & Paquette, 2005; see also Chapter 2.3) and ASK-LDT (Sampson, Karampiperis, & Zervas, 2005), which use graphical notations but do not incorporate abstractions easier to understand by teachers. The main features of Collage are illustrated in the following example drawn from a real case study.…”