shell script

[easyw]

Hi to all,
I would like to write a script for wings3D that would do these command in sequence:
- import STL 'filenamein'
-select all
-scale uniform 10%
-center X, center Y, center Z
-export WRL 'filenameout'
(the best would be to launch a script from windows command line...)

I cannot find a place with examples... or a manual to start from...

any help would be appreciate
thank you
Mau