[Gmsh] How to reduce the number of elements

[sbayer]

Dear all,

I am new in GMSH and would like to generate a 3D mesh from a .stl 
surface model. Is there any possibiliy to controll the size of the final 
3D mesh? I would like to keep the size of the .msh file as small as 
possible which mean the number of the tet elements should be as less as 
possible. How can I do it with GMSH?

best regards,
-- 
Siming Bayer
Universität Erlangen-Nürnberg
Chair of Computer Science 5 (Pattern Recognition)
Martensstr. 3
Room: 09.158
91058 Erlangen
Germany
Phone: 09131 85-27826
E-Mail: siming.bayer at fau.de