`ex` (i.e. vi's ex mode) is a better comparison than `ed`. Original `vi` also has ‘open mode’ for printing terminals and glass ttys — like a series of one-line

`ex` (i.e. vi's ex mode) is a better comparison than `ed`. Original `vi` also has ‘open mode’ for printing terminals and glass ttys — like a series of one-line windows, where every vertical motion starts a new line. None of the popular clones implement it.