@inproceedings { ferreira08,
	abstract = {Simulating the dynamics of real worlds using Virtual En- vironments (VEs) is a growing area with many interesting applications. There are tools based on graphical inter- faces to create and visualise these VEs, although most of them are specific to a particular type of environment. Fol- lowing recent developments in calligraphic systems, which have emerged as a viable alternative to conventional direct manipulation interfaces, we devised an approach that takes advantage of these systems to manage the elements in a VE.
In this paper we present a tool that allows users to man- age VEs collaboratively using a sketch-based interface to- gether with a simple visual language that generically de- scribes the elements in a VE. To validate our work we did a small test case with the simulation of a world populated by synthetic characters.},
	address = {Herrsching am Ammersee, Germany},
	booktitle = {VL/HCC Workshop: Sketch Tools for Diagramming},
	month = {September},
	pages = {37-46},
	title = {EditION: A Collaborative Calligraphic Tool to Manage Virtual Environments},
	year = {2008},
	author = {Alfredo Ferreira and Marco Vala and Guilherme Raimundo and João António Madeiras Pereira and Joaquim Armando Jorge and Ana Paiva}
}