including my-standard paper properties

[John Sankey]

Do I read the refman correctly, that if my userfile \paper block is

 \paper{
  \include "paper.jds";
  arithmetic_multiplier=6.8\pt;
  beamAutoEnd="3/8";}
  
and paper.jds contains:

 arithmetic_multiplier=6.6\pt;
 beamAutoBegin=0;
 indent=0.;
 linewidth=188.\mm;
 maxVerticalAlign=42.\pt;
 minVerticalAlign=42.\pt;
 noStemExtend=1;
 staffLineLeading=5.5\pt;
 textEmptyDimension=1;
 timeSignatureStyle="C";
 tupletVisibility=0;
 \translator{\PianoStaffContext
  \consists Bar_number_engraver;}
 \translator{\ThreadContext
  \consists Font_size_engraver;}

then all the properties will be applied reliably?
(and a_m=6.8 will override the paper.jds a_m=6.6
since short triple times like 3/8 seem to pile up more
than others).

John