Transferring Patterns to Dark Wood

Transferring patterns to dark material can be a challenge. When the pencil line is the same color, or nearly so, as the wood you're making your project from, how do you follow the line? Thankfully there's a product, available at craft stores, that solves this problem. Instead of leaving a dark line for you to follow (on dark wood) it leaves a brilliant white line. Very easy to see that! Have a look.