图形界面编辑节点文字、颜色、位置，一键保存思维导图图片
Edit: Edit the mind map content(use a blank space to increase the indentation: Color coordinateX coordinateY angle size type)
Return: Return to the previous mind map content
Save: Save the mind map to download folder
Previous: Select the previous node
Next: Select the next node
Move: Move node
Rotate: Rotate node
Zoom: Zoom node
Color: Change node color
Content: Change node content
New: Add child node
Remove: Remove node and child nodes
Type: Change node type