Action
When the Design Window is open, the following actions are available for selection on the Design tab, in the Action group:
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Click Undo (CTRL + Z) and Redo (CTRL + Y) to undo and redo (revert the undo of) the last action.
 
  Once a design action is complete, click Clear to clear the Undo/Redo buffer:
 
 
 
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Select Create Sectional View to create a sectional view from the current plan view. (Ctrl+E,V)
                                                 
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Select Apply Colour Set to apply colours to design elements by selecting or defining a colour set. (Ctrl+Alt+L,L)
                                                 
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Select Measure to measure the distance and the slope between selected points. (Ctrl+U,M)
                                                 
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Select Properties to view or set the properties and attributes of the selected shape. (Ctrl+Shift+P)