elk-full.jar have to be in the very same folder. You cannot rename elk-full.jar
Once installed, you can invoke ELK instead of GraphViz with the
!pragma layout elk directive.
This diagram is generated using ELK. You can use the
-P command-line option to specify the pragma, rather than putting it in the puml file:
java -jar plantuml.jar -Playout=elk
[Ref. issue-582]Do not expect too much right now, this is really an alpha-version. The idea is to get feedback from users, to know if we should continue in this direction (that is, supporting ELK within PlantUML). Still, you can test class diagram and deployment diagram and tell us what you think about the result.