This release of SDML is based on a newer release of the VisualWorks
Smalltalk programming language - VisualWorks 5i.2 Non-Commercial.
This release of VisualWorks is available for Linux, which the older
release (2.5.2) was not.

The VisualWorks 5i.2 Non-Commercial object engine (virtual machine)
can be downloaded directly from the Centre for Policy Modelling
website, or alternatively from the suppliers (now Cincom Systems) at:

	http://www.cincom.com/smalltalk/vwdownload.asp

It is thus no longer necessary to mail us at the Centre for Policy
Modelling for the object engine; this release also abandons the
necessity for an initialization (".ini") file, so everything required
to run SDML can now be downloaded from the web or by anonymous ftp.

Other changes in this release of SDML (due to underlying VisualWorks)
are as follows:

	a)	Simulations and database experimentations can now be
interrupted with Control-Y instead of Control-C. This is because
Control-C is now used for copying text (with Control-X to cut and
Control-V to paste), in common with most Windows applications.

	b)	The middle and right mouse buttons are swapped (when
SDML is used with a three-button mouse), so that the right button is
used for pane-specific menus and the middle mouse button is used for
a general window menu. This also brings SDML into line with other
applications.