more enhanced documentation
more enhanced documentation


Former-commit-id: eb74696dc9b4d634c6fc0b90fbf078dd10dd8765 [formerly 90a0a4cf3c5448e813bc12a429458ac10a4176f6]
Former-commit-id: 47593169d75ee2b23140892aca88f6759e79821e
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine