You are confusing command line and terminal here, I believe. Note how OP was specifically using emacs as an example. From your "store and share commands" point

You are confusing command line and terminal here, I believe. Note how OP was specifically using emacs as an example. From your "store and share commands" point of view so called TUIs (like emacs in terminal) are as opaque as GUIs (emacs in X11).