From:  Daniel Glazman <daniel@glazman.org>
Date:  31 Aug 2005 17:04:52 Hong Kong Time
Newsgroup:  news.mozilla.org/netscape.public.mozilla.editor
Subject:  

Re: Controlling the position of insert point (caret)

NNTP-Posting-Host:  ppp-70.net-723.magic.fr

Deshbir wrote:
> Hi,
> 
> Is it possible to control/change the position of editor insertion point
> (cursor/caret) ?
> 
> For example I need to move the insertion point to end of the last
> character/word ....
> 
> Thanks in advance
> Deshbir

Yes. Use the selection.
 From JS, it's editor.selection where editor is the current editor instance
(not the xul element). See 
http://lxr.mozilla.org/seamonkey/source/content/base/public/nsISelection.idl