The description of these behaviors is termed the mechanism. When scientists are not provided with such a mechanism, then a description of a process, it's explanation, or it's understanding, is questioned. Astrology does not work with mechanisms. It works with relationships, patterns, tendencies, and interpretations. It does not always give a yes or no answer.
I hate the Drawing Canvas and I understand that it's not backward compatible, so I never use it. To turn it off in Word 2002 and above, go to Tools 4 Options, General tab. Untick Automatically create drawing canvas....
Use the Insert or Paste command to place the graphics image in the document. On the Drawing toolbar, click Text Box. If the Drawing toolbar is not visible, point to Toolbars on the View menu, and then click Drawing. The insertion point appears as a plus sign (+) when you move it over the document.