Unified Services Router
2.5 ESCAPE SEQUENCES
!! - Su b s t it u t e t h e las t co mman d lin e.
!N - Su b s t it u t e t h e Nt h co mman d lin e (ab s o lu t e as p er 'h is t o ry ' co mman d ).
!-N - Su b s t it u t e t h e co mman d lin e en t ered N lin es b efo re (relat iv e).
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CLI Reference Guide