You can find out how it codes in either of two ways:

Under the Things you can do popup menu, choose Dispute a transaction. A list of recent transactions is displayed. Click on the desired transaction to review the information about it, including the category. This does not dispute anything (which is an additional step).

Alternately, choose Go to Blueprint, then click on the See Spending button. It will show spending per category. Click on a particular category and the various charges associated with that category will appear. Note that pending charges will show up in Blueprint several hours ahead of when they actually post.