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 insert multiple lines, click Shapes in the Illustrations group on the Insert tab. Right-click the line you want to draw. Select Lock Drawing mode.. When you're done drawing lines, click Esc to exit the mode. Click the Microsoft Office Button or File tab. Click Save to save the document.