A Hewlett Packard paper points to psychologist Jerome Bruner of New York University who has described studies that show that people only remember 10% of what they hear and 20% of what they read, but about 80% of what they see.

Visualize your point and you increase the staying power of your communication.

I'll even go a step further and encourage you to evaluate the visual appeal of your text. Make it scannable.  That means keep the paragraphs short (there is nothing that will kill readership like a mass of gray text). Break it up with headers. And use bullets.

In short, make your communication visually approachable. You'll find that readers are more willing to engage. And more likely to remember the point you're making.