“…However, most systems are aimed at supporting training of maintenance tasks in which knowledge of both assembly and disassembly are part of what is acquired during the training of the tasks (Webel et al, 2013, Xia et al, 2012Peniche et al, 2011;Gutiérrez et al, 2010;Abate et al, 2009;Oliveira et al, 2007;Wang and Li, 2004;Bluemel et al, 2003;Vora et al, 2002); only a few are dedicated solely to support training of assembly tasks (Lili et al, 2009;Brough et al, 2007;Abe et al, 1996). On studying these publications further we also found an indication that formal user requirements elicitation was rarely conducted prior to the development of the systems.…”