Below Code used with 17.4 axlUIViewFileCreate does not display HTML format, but 17.2 works fine.
fprintf( logwindow, "<!DOCTYPE html>\n" )
fprintf( logwindow, "<html>\n" )
fprintf( logwindow, "<body>\n" )
fprintf( logwindow, "<b><font color=\"blue\">===================================================================</font></b>\n" )
fprintf( logwindow, "<b><font color=\"blue\"> Information </font><b>\n" )
fprintf( logwindow, "<b><font color=\"blue\">===================================================================</font></b>\n" )
fprintf( logwindow, "</body>\n" )
fprintf( logwindow, "</html>\n" )