great it works
thanks mouser !
however, i'm pretty positive :
htmlviewurl C:\_common\test\index.htm
worked at some point (it was in several aliases of mine)
this command is still in the help file !! :
htmlviewurl URL - grabs a web page url and displays content in html view mode (this can be http://.. or file://)
and no showfilehtml...
time to update the help file mouser