Concept Map Question Type

Question type that allows students to draw and submit a Concept Map as answer
Concept Map Question Type is a web based editor for Concept Maps, that allows teachers to create questions in which the students will submit a Concept Map as their answer.
The features are:
Allows unlimited concepts and relationships.
Undo/Redo to facilitate usability.
Easy to use drag and drop interface.
Fully compliant with internationalization standards (English and Spanish are provided).
Very simple XML standard for storing the maps.