英文版更新说明：This version has the following key features:each tool has user-friendly settings dialog and provides results preview capabilities during tool processing (preview shows settings adjustment results instantly before actual geometry creation in an active model)the result of each tool processing is an object, which allows post-processing interaction and settings adjustment after tool deactivationsystem provides two ways of results refreshing: manual and automatic (through observing the state of SketchUp 'Move' and 'Scale' tools)extension has detailed information about tools usage: 'Help System' and hints for currently active tool usage within 'Instructor' window
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