\usepackage{palatino}to your file. The pifont package has special commands for using the Zapf Dingbats font.
\dingfill{40}
completes the line with the
specified symbol 40
and \dingline{36}
draws a whole line of symbols. 36
It's a good idea to use a font that's installed in the printer you intend to
use. See the table on page for information about the teaching system's ljmr1
printer.