Placement of boot script in body vs. head

Why place the boot script in the document body, instead of the head?
https://developers.google.com/web-toolkit/doc/latest/DevGuideOrganizingProjects#DevGuideHostPage
https://developers.google.com/web-toolkit/doc/latest/DevGuideOrganizingProjects#DevGuideBootstrap

I've ignored the instructions and placed it in the head (std, xs and
xsiframe linkers) with no apparent problems. What am I missing?

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Michael Allan

Toronto, +1 416-699-9528
http://zelea.com/

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