Following options are available in the automenu of the the Edge Blend command:
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<Ctrl>+<Enter>  | 
Finish input  | 
Confirms the operation creation.
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<P>  | 
Set entity parameters  | 
Invokes the operation parameters dialog.
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<X>  | 
Exit command  | 
Cancels the operation creation and exits the command.
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<F5>  | 
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<Ctrl>+<F5>  | 
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<D>  | 
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<E>  | 
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<Z>  | 
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<S>  | 
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<L>  | 
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<T>  | 
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<Num0>  | 
This option is available, when creating a blend on a fragment in assembly.