v1.3e :slider for progress + Esc to exit + hide command panel
(進度顯示 + ESC鍵終止 + 多於10個物件就隱藏命令面板)
v1.2e :support multi object and group
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set Pivot(Z axis) to select edge (poly only).
1.select a poly edge (選一條 poly 的線)