From the original Amiga UNIX 2.1 manual. Some things it mentions may not be in this release.
NAME
line - read one line
SYNOPSIS
line
DESCRIPTION
line copies one line (up to a new-line) from the standard input and writes it on the standard output. It returns an exit code of 1 on EOF and always prints at least a new-line. It is often used within shell files to read from the user's terminal.
SEE ALSO
sh(1).
read(2) in the Programmer'sReferenceManual.