Meaning of とうこういちらん in Japanese

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Definition of とうこういちらん

とうこういちらん(toukouichiran) 【投稿一覧】

(n) posts list; (summary) list of all messages (threads)
投稿一覧の下の凡例を見て原因が分かりました。
When I looked at the explanatory notes under the posts list I realized what was causing it.