“To keep things organized, Mr. Cavalcanti established a subgroup of 130 people who operate on Slack and filter through the information that amasses by the minute, building a catalog of open-source solutions for medical supplies as they go. (Version 1.1 of the guide was released on March 20.)According to Mr. Cavalcanti, moderators flag designs that are posted in the main group. A team of medical professionals evaluates the flagged content. Then, a documentation group puts the approved information together in read-only Google documents, creating a virtual library that details equipment including exam gloves, face masks, negative pressure rooms and oxygen masks.”