Hi all, can someone please explain to me the reason for setting of interword stretching/shrinking as follow ... \setint{fontdimen(3)}{\scale{\int{interword}}{600}}% interword stretch \setint{fontdimen(4)}{\scale{\int{interword}}{240}}% interword shrink ... Another question is that why it is given in ext file? Shouldn't it be rather in a mtx file? Regards, Thanh