The material on the attacks, as well as on the other subjects, was added by in-house editors or outside writers, she said.
"We have 13 in-house editors and of these, maybe 4 or 5 live in the city."
Angela Tinson is an in-house editor at Lonely Planet.
The club's in-house editors choose the 400 or more alternate selections offered to members.
One feature of his agency is a newly hired in-house editor, Neal Bascomb, who will work closely with fiction writers.
It is edited by dedicated h2g2 Researchers, not paid in-house editors.
Each book undergoes rigorous review, including preliminary evaluation by an in-house editor.
Editing firms may employ a team of in-house editors, rely on a network of individual contractors, or both.
The manuscripts are first assessed by in-house editors.
Many game developers use in-house editors that are not released to the public, but a few games have publicly available editors, some of them created by players.