Scroll through tabs

[readtrek]

Hello, I have a ton of audiobooks that I organize through tabs, using author, genre, etc. My question, is there a way to scroll through the tags I have created? When I have a new download that I want to tag using a descriptor I already have ( for example: Pillar), I have so many, that I can only see a few dozen (on the new tabs window), say from "a" to those starting with "b", and all the others are only visible by the menu on the left. The problem arises when I want to add an existing tag that I can't readily see, so difficult to avoid spelling or spacing discrepancies and end up making a brand new tag. Which means double checking tags to edit, add or remove them constantly. Thanks.