_Tsrv.Qload
 {
%
% this is the first time xact images que for tree is ready
%
  _Tsrv.Qpass
  {
%
% there were inital xacts
%
  } if
  false !Tsrv.Qload
 }
 {
%
% past the first run of tree texture loading
%
 } ifelse
%
% have loaded all xacts in que into tree textures
%
 false !Tsrv.Qpass
 true !Tsrv.Qdone