----prompts for Open1
Opening first point: 
開口部位之第一點: 
Perpendicular to oppsite edge point: 
垂直至對面邊緣線上之點: 
Opening width: 
開口寬度: 
Draw 2 parallel lines at opening? (if so, set proper layer first) [Yes/No] <No>: 
於開口處畫兩條平行線? (若是,請先設定適當之圖層) [是(Y)/否(N)] <否>: 