1. (noun) a detailed plan or explanation to guide you in setting standards or determining a course of action

• road map

2. (noun) a rule or principle that provides guidance to appropriate behavior

• guidepost
• rule of thumb

1. (noun) a light line that is used in lettering to help align the letters

• line

2. (noun) a detailed plan or explanation to guide you in setting standards or determining a course of action

• counsel
• counseling
• counselling
• direction
• guidance
• plan
• program
• programme

3. (noun) a rule or principle that provides guidance to appropriate behavior

• regulation
• rule