[Gmsh] How to use gmsh.exe

[fzl]

hi,
I download Gmsh software, i.e. Current stable release: Windows, in the homepage. I want to do local refinement in software's mesh module. After adding new fields, i.e. Attractor with facesList = n and Threshold, it does not do local refinement at all although I have set the parameters in options item.
I have already read gmsh manual, but it doesn't give a detailed description on how to use the mesh module. So, is there any description about how to use gmsh.exe?
Thanks.
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