"menu-1251-1" class="middle even sf-item-4 sf-depth-4 sf-no-children"><a href="users-guide/variables-xpressions/DEFINING-NEW-VARIABLES.html" class="sf-depth-4">3.4 DEFINING NEW VARIABLES</a></li><li id="menu-1252-1" class="last odd sf-item-5 sf-depth-4 sf-no-children"><a href="users-guide/variables-xpressions/DEBUGGING-COMPLEX-HIERARCHIES-OF-XPRESSIONS.html" class="sf-depth-4">3.5 DEBUGGING COMPLEX HIERARCHIES OF EXPRESSIONS</a></li></ul></li><li id="menu-1393-1" class="middle even sf-item-6 sf-depth-3 sf-t