EXPIRE parameter*   ==  EXPIRE=validity[/custody][:connMap]
           connMap  ==  ProtoList:dstHostList:srcHostList
          validity  ==  period
           custody  ==  period
            period  ==  Num[d|h|m|s]
                    --  default: EXPIRE=1h

EXPIRE specifies the term of validity of cached data, in unit of days, hours, minutes, or seconds. Validity does not mean active removal of cached data by DeleGate; DeleGate merely ignores cached data if it is older than the specified term.