Does JModelica.org support full Modelica 3.1?

In terms of parsing of Modelica 3.1 code: yes. In terms of flattening of models: no. We are continuously working on improving the Modelica compliance, please refer to the Trac Roadmap page for details on how the implementation proceeds.

The road map link is broken to external users

I was interested in understanding when/whether support for Modelica features like if then else and when are likely to be delivered. I think I read they aren't currently but I couldn't find it when I looked again.

Regards

Mark

Roadmap

Mark, 
 
Thanks for pointing out the broken link, I have updated the FAQ. We are currently in a phase of rapid development of the compiler front-end and the level of support is therefore changing from day to day. Never the less, I agree that we need to improve on reporting what parts of the language are supported and which ones are not.
 
Best
/Johan