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~~NOTOC~~

====== Preface ======

Dear user of GroIMP,

this is the user manual of GroIMP, the Growth-grammar-related
Interactive Modelling Platform. GroIMP is OSI certified open source software
and available at the web page [[http://www.grogra.de/|www.grogra.de]]. Currently, the GroIMP
software is in a BETA :-o state, which means that malfunctions may occur, though
the software has been tested in-depth. The latest news can be found at the web
page.

==  ==

GroIMP arose out of academic research in the field of
plant modelling, mainly carried out by the [[http://www-gs.informatik.tu-cottbus.de/|Chair for Practical Computer Science / Graphics Systems]] at the Brandenburg University of Technology
Cottbus (Germany) and the [[http://fbi.forst.uni-goettingen.de/|Plant Modelling Group]] at the
Institute of Forest Biometry and Informatics at the University of Göttingen
(Germany). In the frame of this research, techniques of rule-based plant-modelling were
developed and refined, and quickly it became clear that these rather abstract
techniques had to be accompanied by a smart, interactive and user-friendly
software platform with an up-to-date graphical user interface. The result of
the effort of bringing together elaborated rule-based modelling and
user-friendly, interactive software is GroIMP and its various plug-ins, the latter
extending GroIMP with additional functionality.

In the current version, GroIMP supports 3D modelling with OpenGL-based 
rendering, including various forms of NURBS
surfaces, rule-based modelling using Lindenmayer systems and rule-based
modelling using Relational Growth Grammars (RGG) expressed in the programming
language XL. It also contains a 2D interface for
visualization and modification of network-like structures.

As GroIMP is open source software, you are invited to contribute to it. Have a look at the web page to get the latest news and source
code!

In its current state, this user manual is by far not
complete. It explains some basics of how to work with GroIMP's user interface,
more detailed documentation will be published later.

We wish you
much fun and success with GroIMP.

The GroIMP development
team