getObjectExtent() question

The getObjectExtent() wording says:
 
"... Other than text attributes and Style Properties, the calculation is
not affected by CGM Primitive Attribute (such as line width) or Control
elements, nor by APS Attributes
<http://www.w3.org/TR/2008/WD-webcgm21-20080917/WebCGM21-DOM.html#>  or
Style Properties
<http://www.w3.org/TR/2008/WD-webcgm21-20080917/WebCGM21-DOM.html#> ..."
 
Isn't that a contradiction regarding Style Properties? Do Style
Properties affect the calculations, yes or no?
 
Benoit.