Better comments [skip CI]
Better comments [skip CI]


Former-commit-id: 4064cb5d3a4338b1996e3d8f9b8f65c80c45d7aa [formerly 173d5a711fac2d14bdbecdb130d2ba2fa208db9c] [formerly 173d5a711fac2d14bdbecdb130d2ba2fa208db9c [formerly 90848c650512fd0cc06d1dc856ea109ec92ff209]]
Former-commit-id: e68ccec2430f6347dc6bf3ee9629974975fd97b0
Former-commit-id: 7f584c50d608575cd802a7a8926d5d61e3791acc
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine