I am using MacOS system preferences to change the default commands in TeXShop. It's necessary to type in the exact name of the menu command in order to change it.
I want to change the Switch <-> Preview Command from CMD+1, however, I don't know what the name of this command is exactly. I've tried "Source Preview", "Source $\Leftrightarrow$ Preview".
The instructions for changing default keybindings as I understand them are linked here: https://tug.org/pipermail/macostex-archives/2008-March/034602.html
Does anyone know the exact name of the menu item that I need to use? If not, is anyone familiar with a workaround for this particular problem?