noun
listed; already viewed
Used in computing contexts to indicate that an item has been displayed or included in a list, often as a status label.
このメールは一覧済みに移動されました。
This email has been moved to the listed items.
一覧済みのファイルを再度確認する。
Recheck the files that have already been listed.
Compound of 一覧 (list, overview) and 済み (done, completed). The exact historical derivation is uncertain, but the term is a straightforward modern computing coinage.