区切 くぎ 機能 きのうではありませんでした
kugirishi kinōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 区切り子機能

1. Was not a section dividing function.; Was not a function to divide sections.

Past/Perfective
Negative
Polite
Formal Register
Computing