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 Windows Ink. Jot sticky notes, sketch, and draw on screenshots with your pen in the Windows Ink Workspace. If you don't have a pen, draw using a mouse or your fingers. To turn on the workspace, press and hold (or right-click) on the taskbar, and then select Show Windows Ink Workspace button.