enhanced documentation
enhanced documentation


Former-commit-id: 7e6dbe6683ec9b5202e99458f85b8430060bb0d1 [formerly 094ec336a15993bfd6cb82dc1e3ff6667a334320]
Former-commit-id: 97615c56d2909b2ce9281e206c5d8d4878382970
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine