[GNC] Tab bar icon text

[will at theprescotts.com]

This should be easy to find, but I haven't found it yet.

Running Gnucash 4.2 on Mac OS 11.0.1.

On my laptop machine, the tool bar shows the icons with text labels below them.
On my desktop machine, the text labels are missing.

I find some of the icons totally mystifying, and the text labels are very helpful. But I cannot find where to turn them on. Any suggestions?

Thanks,
Will