/* (-s option: serial concatenation like old
(127's) paste command */
For that matter, what's the "old (127's) paste command" it refers to?
I can't remember 127 ever having a "paste" command. We did have
"ov",
which overlaid adjacent pairs of formatted pages to make two-column
text. "Serial concatenation" would seem to be what was done by "pr"
or "cat".
"ov" figured in the flurry of demos on the day of pipes' birth.
nroff | ov | ov
made four-column output.