Sorry for late reply….somehow this one got missed. Anyway, adding html source code to the title field is probably going to get stripped out due to WordPress filtering and security. Things have changed over time with WordPress, and that article link you posted is dated way back to May 11, 2011, so it will definitely be outdated. I would do more Google search, but make sure the results show nothing more than 1 year. Check WordPress plugins at wordpress.org and see if anything comes up for you.
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