置換 ちかん可能 かのう文字 もじデータでしょう
chikankano umoji dētadeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 置換可能文字データ

1. Likely replaceable character data.; Probably replaceable character data.

Polite
Presumptive
Conjecture
Computing