This demonstration displays very long text, which would normally stay on a single line. However, the text width property forces an absolute width, which makes the text wrap on word boundaries.
To have the text based in the top-left, and wrap down, the anchor is set to [-50,-50]. A very thin border is added as 0.1 which usually renders as a single pixel.
width is animated back and forth over 4 seconds per leg.
The second animation, which can be seen by clicking the button labeled 2 underneath the editor, is a simplified version that animates with center alignment.