====== COMBTHSDB Command ======

COMBTHSDB,<Xfile>,<Yfile>,<Zfile>,<Comb>

Combine three input element stress/force/moment history binary databases for X, Y and Z seismic input into a single database. 

  * Xfile - full path name of the x direction binary database 
  * Yfile - full path name of the y direction binary database
  * Zfile - full path name of the z direction binary database
  * Comb - full path name of combined direction binary database