User Manual
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1.6.2.1 The Right Click Mouse Event in the Workspace 
Right-click on the blank workspace of the non-code block, the function 
is mainly for all code blocks: 
【Undo】: Undo the previous operation. 
【Redo】: Restore the last undo operation. 
【Collapse Blocks】: Collapse all code blocks. 
【Expand Blocks】: Display all collapsed commands. 
【Delete 30 Blocks】: Delete all code blocks. 
1.6.2.2 The Right Click Mouse Event of the Code Block 










