If \fIch\fR is a tab, newline, or backspace,
the cursor is moved appropriately within the window.
Backspace moves the cursor one character left; at the left
edge of a window it does nothing.
Newline does a \fBclrtoeol\fR,
then moves the cursor to the window left margin on the next line,
If \fIch\fR is a tab, newline, or backspace,
the cursor is moved appropriately within the window.
Backspace moves the cursor one character left; at the left
edge of a window it does nothing.
Newline does a \fBclrtoeol\fR,
then moves the cursor to the window left margin on the next line,