Code Explorer is now part of the Toolbox you can see either on the left or on the right in Code Editor window. Just click the title “Code Explorer” to activate it. Code Explorer in v6.x is more advanced than in 5.5; it shows not only all names but also references to them in the code, for example. Alternatively, to navigate to a particular function/procedure in a package, you can use the combo box in the Code Editor toolbar, next to the “package” button.