Hi edwin,

re:
> my question to the picture would be how i can toggle on/off this transperency(the dotted lines inside the mesh)

That can be turned on or off using View > "Display hidden lines" checkbox on the side pane:




To do it from a keyboard shortcut, put in this for the shortcut key command:

script: /* Toggle show hidden lines */ moi.view.showHiddenLines = !moi.view.showHiddenLines;

- MIchael