0 the principles on which future behaviour is based: --
In all relationships a few ground rules have to be established.
1 the basic rules for doing something: --
We set very strict ground rules for the interviews.
2 the rules on which a person or organization bases their behaviour: --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Vi kan slutföra det steg för steg hur lång vägen än är och den kan inte slutföras hur kort vägen än är om du inte ens markerar ditt fotavtryck.