Dropout labels

Hi, I’ve been using audacity for a while, but far from a n expert!
I was copying an old tape and when I was adding labels to it I noticed a great deal of labels numbered from 20! These went on and on!
I tried deleting them but there were so many I didn’t get to the end before I gave up!
How can I select them all and delete them in one go? I’ve read the manual but it does seem to cover this!

You can delete the entire label track by clicking the [X] in the top left corner of the track.

Alternatively, click in the label track (but not in a label text field) and drag across the track to select all of the labels that you want to delete, then press the “Del” key to delete them.

If you need to delete some labels without affecting the positions of other labels later in the track, then use “Edit menu > Remove Spacial > Split Delete”.

As indicated by your topic title, I’d guess those were added by Audacity’s “dropout detection” (https://manual.audacityteam.org/man/recording.html#dropouts). The labels probably indicate that those parts of the recording are damaged.