The wml code window allows you to edit the code directly. The code is shown in different colors, these all represent different
elements of wml, which makes it easier to read and edit. Changes made to the wml
code window are reflected in the element tree window and in the element
attributes window after you stops entering code. If you want reflect code
changes to other windows, press F9 key.

In the left bottom corner you see current cursor position, in the right bottom
corner- currently used code page encoding.