垂直 すいちょく方向 ほうこう書式 しょしき おくりであれば
suichokuhōkō sho shiki okurideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 垂直方向書式送り

1. if it were vertical writing format scrolling; if scrolling in vertical writing format

Ba Conditional
Computing