There are a lot of acronyms in the field that I work in (mobile telecoms) and
often I don't have a clue what the acronym stands for.

What I would find very useful is some kind of lookup table in word where you
enter the acronym and it's meaning then when you are reading the document &
place the cursor over the acronym then it displays the meaning.

Does such a feature exist? It would be so useful for me as well as many
other people.

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