WordPress Tootips by Tomas Zhu gave me unreliable results. Adding a term to the glossary ought to add tooltips sitewide. This did not happen. It also provided overlapping tooltips for some terms. I gamed the plugin by using manual shortcode, but that is very laborious. I later tried CM Tooltip Glossary by CreativeMindSolutions and got such consistent results I wish I had not bothered with Zhu’s product to begin with. Support from Zhu is very slow and English is not their native language so communicating was difficult.