開放 かいほう がた文書 ぶんしょ体系 たいけいだったら
kaihōga tabun shota ikeidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 開放型文書体系

1. If it were an open document system; If it was an open document system

Tara Conditional
Computing