There are many lists that aren't searchable, those that are you can only search by entering the first letter. What I mean is that you can type in the first few letters and the list jumps to the point in the list that starts with that letter. For example when selecting elements you can select all elements of a level. But you cant search the level, you have to enter the first letter of the level and then scroll to search for it. There are also lists that aren't alphabetical, which makes it so much more of a pain to search for items in the list. For example in substation - place cable bus - there is a list that isn't alphabetical.