What are a series of evenly spaced lines indicating solid material on a section view known as?

In drafting and technical drawings, a series of evenly spaced lines used to indicate solid material in a section view is referred to as hatching. Hatching serves to differentiate between various materials or to represent surfaces within a cut section, allowing for clarity in visual communication. The lines are typically drawn at specific angles and distances, creating a pattern that helps to define the material being represented.

This technique is crucial in conveying information about the object's composition and internal features without the need for additional text, enhancing the understanding of the design. On the other hand, scoring, sectioning, and grid lines do not specifically relate to the representation of materials within a section view. Scoring typically refers to making cuts or grooves in a surface, sectioning involves cutting through an object to reveal internal structures but doesn't denote material, and grid lines serve as reference lines for measurements rather than for indicating material in section views.