Edit local name or physical name directly in diagram. Copy/Paste element(s) in any diagram. Paste code text to generate class element and it's member function and data. Large canvas - 4000x4000, dividing 16 arrays. Canvas can auto size to fix all elements. Click the eye on right-bottom to navigate entire diagram canvas. Use [SPACE] key and mouse left button to move canvas, like Photoshop. Support multi-select. You can selemct more elements to Copy/Paste, Delete, Move.