Eli Zaretskii wrote:
>> Date: Tue, 10 Nov 2009 14:08:11 -0800
>> From: Michael Snyder <msnyder@vmware.com>
>> CC: Eli Zaretskii <eliz@gnu.org>,   "gdb-patches@sourceware.org" <gdb-patches@sourceware.org>,  "glaw@undo-software.com" <glaw@undo-software.com>,   "jakob@virtutech.com" <jakob@virtutech.com>,  "teawater@gmail.com" <teawater@gmail.com>
>>
>> +goto-bookmark [<N>]
>> +  Return the replay target to the excution position represented by the
>> +  Nth bookmark.  Resume replay debugging from that point.
> 
> Is the argument really optional here?

No.  Sorry.  How about this?