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....
To turn the drawing grid on or off: Word 2003 and earlier: Right-click on a toolbar to display the Toolbars menu. Select Drawing to display the Drawing toolbar. On the toolbar, click Draw (far left end) and select Grid from the menu. Check or clear the check box for Display gridlines on screen.o remove it: Word 2003 and earlier: Go to Format | Borders and Shading and select the Page Border tab. Click on the preset picture for None, then OK. Word 2007 and 2010: On the Layout tab, in the Page Background group, click Page Borders. In the Page Borders dialog, click on the preset picture for None, then OK.