[NTG-context] slithering captions

[Sanjoy Mahajan]

> oops, cloned [figures],

Ah, thanks.

For inline figures, 'here' will place it here if possible, otherwise
float to the next page.  Is there an equivalent of 'here' for margin
figures ('marginhere'?)?  

With 'margin', they float completely so are not attached to a
paragraph.  With 'inmargin', they are attached to the paragraph and
can drag the paragraph to the next page, which leaves whitespace at
the bottom of the page.

-Sanjoy

`Never underestimate the evil of which men of power are capable.'
         --Bertrand Russell, _War Crimes in Vietnam_, chapter 1.