| It was a demand that the layout could be built and operated in the living room. It also had to be put together in a compact way for handling, transportation and storage. |
 The first plan for the layout was made with the physical measure of the living room in view. The layout could be set up physically, but the living room could not at the same time be used as a living room. A new plan for the co-existence of the living room and layout had to be made. |
 The second plan where built and was in use for a couple of month. Board A was a source to irritation since it had to be moved when not in use to allow free movements in the living room. A number of different operations trials show that the A board could be much shorter. |
 The third edition has been very successfully. The layout can remain standing for several months for construction and operation together with the daily use of the living room. An unexpected advantage was the interest from my wife and visiting friends. They have comments on every new detail and they become useful reviewers when decisions were to be made. |
Updated at 18.2.2006