[scribus] Scripter newDocument margins (left, right, top, bottom) interpreted as (inside, output, top, bottom) for page spreads?

[O'Brien-Strain, Eamonn]

In the Scripter API documentation
  http://docs.scribus.net/index.php?lang=en&page=scripterapi-doc
the "margins" tuple passed to the newDocument function is described as being in 
the form "(left,right,top,bottom)".

I assume however when the "pagesType" is set to PAGE_2 (meaning, double-sided) 
then this tuple is interpreted as "(inside,output,top,bottom)", with the 
margins mirrored on a page-spread.

Am I correct?

Thanks,
__
Eamonn