Venn diagram markers question type

Teacher can define the question (a set theory expression), correct answer as a Venn diagram and penalty per incorrectly answered region. 
Student can click on Venn diagram to mark regions selected or unselected.

This question type was written by Rommi Saar.

This question type is compatible with Moodle 2.1.5+

To install using git, type this command in the root of your Moodle install:

git clone git://github.com/roomlane/moodle-qtype_vdmarker.git question/type/vdmarker

Then add question/type/vdmarker to your git ignore.

Alternatively, download the zip from
    https://github.com/roomlane/moodle-qtype_vdmarker/zipball/master
unzip it into the question/type folder, and then rename the new folder to vdmarker.

Some example questions can be imported from Moodle XML format file "examples/et/küsimused-Hulgateooria-diagrammi märkija-20120515-1055.xml" (these are in Estonian)