When you see an acronym in a set that you are unsure of, on the left side of the page, tehre is a link to Glosary. By clicking on the link, you will get the glossary for all the acronyms defined. By then clicking on the acronym in the list, it will show all the cards in the set with that acronym.
Bruno
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Check my Profile page to see my 2023 Goals and my Lists of sets near completion (5 cards or less) or sets getting close (less than 100 cards missing and 75% complete).
https://www.tcdb.com/Forum.cfm/Page/B/ID/0/?MODE=VIEW&ThreadID=25745&C=0