Final answer:
Ruler guides are dotted, nonprinting lines that are used to help align objects and elements on a digital design or layout software.
Step-by-step explanation:
Ruler guides are dotted, nonprinting lines that are used to help align objects and elements on a digital design or layout software. They provide a visual reference for measurements and positioning. They are similar to the ruler on a physical ruler, but only exist within the digital workspace of a design program.