design - save, restore and reset current design

    design -reset

Clear the current design.


    design -save <name>

Save the current design under the given name.


    design -stash <name>

Save the current design under the given name and then clear the current design.


    design -push

Push the current design to the stack and then clear the current design.


    design -pop

Reset the current design and pop the last design from the stack.


    design -load <name>

Reset the current design and load the design previously saved under the given
name.


    design -copy-from <name> [-as <new_mod_name>] <selection>

Copy modules from the specified design into the current one. The selection is
evaluated in the other design.


    design -copy-to <name> [-as <new_mod_name>] [selection]

Copy modules from the current design into the specified one.