TST had some deficiencies. So does the 'Tree Tabs' which I use instead.
At one point TST was much better than it is now, but some change to FF
made me switch.
It may be noted that old versions of FF and TB had many more
personalization options...
Someone gave me this solution to get rid of the unwanted horizontal tab bar; I'm not smart enough to have invented it myself. I tried using just the first 3 lines, but that didn't work right. It works for FF82/linux, but not for Nightly/linux. Add...
