Foreword<br>Introduction<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Symbols and abbreviated terms<br>5 Functional structure<br> 5.1 General remarks<br> 5.2 Indication systematic<br> 5.3 Code letters<br> 5.3.1 Code letters used to designate 1[st] level <br> function groups<br> 5.3.2 Code letters used to designate function <br> groups from the 1[st] to the 3[rd] level<br> 5.4 Transverse functions<br>Annex A (informative) - Functions on level 4 and level 5<br>Annex B (informative) - Interrelation between EN 15380-2 <br> and EN 15380-4<br>Annex C (informative) - Elementary functions<br>Annex D (informative) - Code letters used to designate detail <br> properties<br> D.1 General<br> D.2 Indication systematic<br>Annex E (informative) - Example for a complete structure <br> of function groups<br>Annex F (normative) - Rules to define the function level<br>Annex G (informative) - Rules to create function names<br> G.1 General<br> G.2 Function terms<br> G.3 Rules for creating function short names<br>Bibliography