Copyright Goodheart-Willcox Co., Inc. 24 Section 1 Introduction to Drafting and Print Reading Phantom lines are thin lines composed of long dashes alternating with pairs of short dashes. The dash pattern is similar to a cutting-plane line, but the line weight should be thin, not thick. Phantom lines are primarily used to indicate alternate positions of moving parts, such as a machine arm, Figure 2‑10A adjacent positions of related parts, such as an existing column, Figure 2‑10B or for repeated detail, Figure 2‑10C. Goodheart-Willcox Publisher Figure 2‑8. Break lines can be used within views to break out sections for clarity or for shortening a view featuring a long and redundant part, such as a handle or tube. Freehand short break line Long break line Goodheart-Willcox Publisher Figure 2‑9. Conventional breaks for solid cylindrical and tubular objects use S-shaped break lines. Solid Tubular