guideline
//ˈɡaɪdlaɪn//
Noun
guidelineSingular
guidelinesPlural
1
A general rule, principle, or piece of advice that provides guidance or direction for how something should be done or how decisions should be made, but is not strictly mandatory.
The company issued new guidelines for remote work policies.
2
A line used to guide or direct something, such as a rope or cord used in navigation or construction.
The workers attached a guideline to help position the heavy beam correctly.