Post #246: 
Leafar:
I am trying to use just certain parts of Wazou´s PMs via scripts but I don´t get it… I use, this one for example for putting the center of an object in a selected part of one mesh, anyone can help me?
In this case you just need to copy the code from execute function (without return line).
saved_location = bpy.context.scene.cursor_location.copy()
bpy.ops.view3d.snap_cursor_to_selected()
bpy.ops.object.mode_set(mode = 'OBJECT')
bpy.ops.object.origin_set(type='ORIGIN_CURSOR')
bpy.context.scene.cursor_location = saved_location
Save this script as *.py file and you will be able to use it as an external script in Command tab.