1. A light line that is used in lettering to help align the letters 
2. A detailed plan or explanation to guide you in setting standards or determining a course of action
   - road map 
3. A rule or principle that provides guidance to appropriate behaviour
   - guidepost, rule of thumb

Derived forms: guidelines

Type of: counsel, counseling [US], counselling [Brit, Cdn], direction, guidance, line, plan, program, programme [Brit, Cdn], regulation, rule

Encyclopedia: Guideline

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