Can't figure out what these symbols are
In the menus for Logic Pro, if you go to Navigate -> Go to -> Selection Start (and End) there are these two weird arrows pointing up and down at a little line. I have searched everywhere, but nowhere can I find this symbol on the internet. Please see the screenie. It looks exactly like the Tab symbol but vertical. Does anyone know what this means, or what key it is referring to?
Thanks,
Steve
Mac mini, macOS 11.4