UFactory xArm

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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.