That is a good question, you should choose Save As - Encoding - UTF-8.
To allow the IDE to show you the list of global variables and to recognize (at design time) structures you should keep Sub Globals in the same file you are working on.
P.S: I received your e-mail about the mail arriiving, it only took one business day more than I expected it to...If you wish, I can mail you the diference beetwen the "old" price and the new one...