Offers Thousands Of Professionally Designed Templates & Hundreds Of Font Combinations. Countless Professionally Designed Templates and Logo Possibilities, Free Trial. Styles: Food & Drink, Education Logos, Business Logos, Fashion Logos, Beauty Logos, Band Logos. The use of lines in graphic design is to communicate a message to the viewer. Lines are paths that join two points. Lines may be straight, zig-zag or curved, dotted or solid, and heavy or light. You could also give different colors to different lines.