Prepares the hrzl_lines for the plot
prFpGetLines(hrzl_lines, is.summary, total_columns, col)Add horizontal lines to graph. Can either be TRUE or a list
of gpar. See line section below for details.
A vector indicating by TRUE/FALSE if
the value is a summary value which means that it will have a different
font-style
Total number of columns
Set the colors for all the elements. See fpColors for
details