ON 20051024 at page:
http://www.massmind.org/techref/io/sensor/posd.htm
someone[--] edited the page. Difference:
"R:\bak\H\techref\io\sensor\posd.htm.20051024.dif"
 
ON 20051024 at page:
http://www.massmind.org/techref/io/sensor/posvect.htm
someone[--] edited the page. Difference:
"R:\bak\H\techref\io\sensor\posvect.htm.20051024.dif"