feature request: "tag manager mode"

I found a quick way to fix my snafu is right clicking on the tags that need to be removed... clicking the menu choice to remove that tag

Question: would you please consider a "tag manager mode" that would allow me to check boxes on multiple tags can selected in larger batches and remove?

One-at-a-time works -- but if I could check off a bunch of boxes I could finish my remaining 7000 mistakes faster in batches of 10... 20... 50... etc

:-D

Unless there is a way to search tag fields for that book title (programably for each book)

I cannot find anything regex to do this in calibre:help::smack: