the right and left arrows or the symbols <> will be useful on the keyboard to indicate OverHead Right (OH->) et OverHead Left (<-OH) for example
Brackets ( & ) are pretty close.
Pointy brackets < > would be an easy fix
+1 to this, and I’ll ask for ^ as well (<, >, ^, and v give you all 4 cardinal directions). These are all standard ASCII symbols
+1
Why not simply write OH L and OH R? ?
Because the channel names are actually SR and SL