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....
Using Keyboard Shortcuts in MS Word. You can avoid reaching for the mouse if you are familiar with keyboard shortcuts. If you forget one of these, use the mouse and go to the menu bar. In each pull down menu you will see keyboard commands given in the right side of the window. To use one of these combinations Hold the Ctrl or Alt key down and strike the letter key. Open a new word document quickly.