掲けい題だいの件けん
Meanings
Noun
1. matter in the heading (of a document); matter mentioned in the subject line (of an email)
Kanji used
put up (a notice)
topic
case
Composed of
subject (e.g. of an email); title
matter; affair; counter for (received) emails, text messages, voicemail messages, etc.; counter for accounts (on a website, email service, etc.)