Dear David Holden, In the latest release (version 6.0) it is not possible. Only in the XSLT Debugger perspective the XML and XSLT documents are separated and grouped in two side by side panels but that is automatic and the user can't change it. We received also a request for draggable views some time ago and we are considering both of these requests for a future version of <oXygen/>. Thank you for the suggestion, Sorin David Holden wrote:

Is it possible to split windows a la emacs/jedit?

thanks

Dave.