ぜん画面 がめん表示 ひょうじじゃありませんでした
zenga menhyōjijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 全画面表示

1. Was not full screen.; Was not displayed in full screen.

Past/Perfective
Negative
Polite
Terminal Form
Computing