So if your string contained just characters 0 through 255, is it possible to remove the second byte and save memory by removing all null values?

ie
T_E_S_T_

where the underscores are chr(0)s (or do they go first?!?). Couldn't you then remove the chr(0)s and have

TEST

and save it into memory as 'Unicode' but not. Who knows what I mean?
??????