IPC Certified Interconnect Designer (CID) Practice Exam 2026 – All-in-One Guide to Master Your Certification Success!

In drawings, line styles convey how the parts relate and what is actually present in the view. A subassembly is shown with phantom lines—the lighter, non-physical outline that uses a pattern of dashes to indicate something that is not a visible edge in the current view but represents the boundary of a separate unit. This lets you see the extent of the subassembly and how it fits with surrounding parts without drawing its internal details in that view. Solid lines would show real, visible edges; dashed lines are used for hidden edges behind something; dotted lines (often centerlines) have a different meaning. So phantom lines are the appropriate choice to enclose a subassembly.