[Therion] show only fixed survey point on maps

[Gilbert Fernandes (mailinglist)]

hello,

I'm looking to display the fixed survey points on maps,
but I didn't succeed.
I try to set the symbol-hide / symbol-show command in the layout bloc,
but if I put

  symbol-show point station

I have all the station points displayed (not only the "subtype fixed" 
points)
and if I put

  symbol-hide point station
  symbol-show point station:fixed

I have no station points.
I saw in the manual that we can use flags to show specific stations
( flag:<entrance/continuation/sink/spring/doline/dig> )
But can we use the subtype of the station points to do the same selection ?
Thanks

Gilbert