guideline

/ˈɡaɪdˌlaɪn/
noun
  1. A general rule, principle, or piece of advice that tells you how something should be done.
    • The company has strict guidelines for handling customer complaints.
    • The teacher gave us a guideline for writing our essays.
    • Follow the safety guidelines when using the equipment.
  2. A line drawn on a page or screen to help you write, draw, or align things correctly.
    • Use a ruler to draw a light guideline before writing your name.
    • The graphic designer added guidelines to keep the text aligned.
    • The dotted guidelines on the paper help children write letters evenly.
What does "guideline" mean? | whatsthatwordmean | whatsthatwordmean