/* set legend text template from a number */
_setlegt(n, str)
{
        switch (n)
        {
                case 0:
                default:
                        setconf("LEGEND_TEXT", "getcomment(%d)");
                        break;

                case 1:
                        setconf("LEGEND_TEXT", "getseriesname(%d)");
                        break;

                case 2:
                        setconf("LEGEND_TEXT", "getshortname(%d)");
                        break;

                case 3:
                        if (strlen(strfind(" ", str)) > 0)
                        {
                                if (strlen(strfind("'", str)) > 0)
                                {
                                        str = sprintf('"%s"', str);
                                }
                                else
                                {
                                        str = sprintf("'%s'", str);
                                }
                        }
                        setconf("LEGEND_TEXT", str);
                        break;
        }
}