WordList > index lists: viewing
In WordList, open an index as you would any other kind of word-list file -- using File | Open. Or, easier in my opinion, in the Controller | Previous lists, choose any index you've made and double-click it. You will see the index as if it were a large word-list.
The picture above shows the top 10 words in the BNC World Corpus. Number 5 (#) represents numbers or words which contain numbers such as £50.00. These very frequent words are also very consistent -- they appear in at least 99% of the 4,054 texts of BNC World.
In the view below, you see words sorted by the number of Texts: all these words appeared 10 times in the corpus but their frequencies vary.
You can highlight one or more words or mark them with the 
option, then 
to get a speedy concordance.
See also Making an Index List, WordList clusters, WordList Help Contents.