and viscosity, an example can be found here: http://www10.informatik.uni-erlangen.de/~sinithue/temp/fluid_timeanim.mpg - for simulation time animation the time IPO of the object is currently used, for all three there should probably be new ipos in the fluidsim struct - started the API in elbeem.cpp, to get rid of parser & export via HD (it's not yet used)