#rule__regulation  a principle or condition that customarily governs behavior; "it was his rule to take a walk before breakfast"; "short haircuts were the regulation"
  supertype:  concept__conception__construct  an abstract or general idea inferred or derived from specific instances
  subtype:  restriction.rule__limitation  a principle that limits the extent of something; "I am willing to accept certain restrictions on my movements"
     subtype:  quantification.restriction  a limitation imposed on the variables of a proposition (as by the quantifiers `some' or `all' or `no')
     subtype:  restraint.restriction  a rule or condition that limits freedom; "legal restraints"; "restraints imposed on imports"
  subtype:  guidepost__guideline__rule_of_thumb  a rule or principle that provides guidance to appropriate behavior
  subtype:  cy_pres_doctrine__cy_pres__cypre__rule_of_cy_pres  a rule that when literal compliance is impossible the intention of a donor or testator should be carried out as nearly as possible
  subtype:  working_principle__workingprinciple__working_rule__workingrule  a rule that is adequate to permit work to be done

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