Sed - Ellie Quigley - Chap 4

4.6.8: Appending: The a command

Tried this many times, but would not work!

$sed '/^north /a\-->THE NORTH SALES DISTRICT HAS MOVED<--' datafile

always kept receiving error:
sed: -e expression #1, char 11: Extra characters after command

Neither does the insert command

4.6.9: Insert command
tried:
$sed '/eastern/i> --> NEW ENGLAND <--
> -----------------0--' datafile