In {HEAD ~ this embodiment}, the cross members 50 are re designated individually as diagonal members 50 d and as vertical members 50 v for {TAIL ~ the sake} of descriptive simplicity, but are for all intents and purposes are materially equivalent to the cross members 50 as shown in FIGS 1 5 
In { HEAD ~ this embodiment } , the cross members 50 are re designated individually as diagonal members 50 d and as vertical members 50 v for { TAIL ~ the sake } of descriptive simplicity , but are for all intents and purposes are materially equivalent to the cross members 50 as shown in FIGS 1 5
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