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....
Creating a mind map in word is extremely easy. As you may very well know Microsoft Word is equipped with creation and drawing tools that are easy to use and navigate. With a bit of creativity you can make use of these tools to create excellent mind maps. No need for fancy mind mapping software applications.